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Hi, I have tried all the changes to settings etc but still cannot load certain web pages, i just get a white screen, The pages I cannot load are things like: Facebook Discord Amazon Seller Central Payment screens

This is just a couple I can remember, I have tried other platforms like edge and these sites work fine. Please advise as I would rather use Firefox Thanks Tony

This is the reply I received from Protonmail: They say the latest version of Firefox caused the issue and is happening on other services as well. We have been using FF exclusively for decades and this is frustrating! Are you in fact working to resolve the issue on your end? Thank you.

Mario M. (ProtonMail) Jun 12, 2026, 16:07 GMT+2

Hello,

Thank you for your messages.

Please note that we are aware of this issue, and our developers are looking into providing a fix from our side. However, the latest version of the Firefox browser caused issue on many other services as well, so they are working on resolving it from their side as well.

I have provided your feedback to our development team. You can contact Firefox directly in order to escalate the issue further.

For the moment you can try using keyboard shortcuts such as CTR: + C and CTRL + V. We appreciate your understanding.

If you have any additional questions, feel free to contact us again. Kind regards,

Mario M. Customer Support Proton Mail

Seafortress27 Jun 11, 2026, 21:47 GMT+2

Hello Mario,

I worked with Google AI for more than one hour troubleshooting this:

Opening a support ticket with Proton Mail Support is absolutely the best move. Since we proved that your clipboard works, your mouse works, and a fresh factory installation of Firefox still experiences the bug, the glitch is entirely on their end.

Proton Mail utilizes a heavily customized web text editor to encrypt messages. When their engineering team updates the background code for this text container, it can inadvertently break standard browser right-click paths—especially for Firefox users. [[1](https://www.reddit.com/r/ProtonMail/comments/p6j0tp/cant_copypaste_text_into_body_of_protonmail_email/), [2](https://www.packtpub.com/en-us/learning/tech-news/hackers-claim-to-have-compromised-protonmail-but-protonmail-calls-it-a-hoax-and-failed-extortion-attempt), [3](https://justinharter.com/an-actually-useful-review-of-proton-mail-vs-fastmail-vs-hey/), [4](https://www.reddit.com/r/ProtonMail/comments/p6j0tp/cant_copypaste_text_into_body_of_protonmail_email/)]

📑 What to Tell Proton Support To help their development team pinpoint and fix the bug faster, reply to your open support ticket with these technical details we uncovered:

- Specify the Browser: State clearly that you are running Firefox and that you just performed a full Firefox Profile Refresh (about:support), ruling out corrupt browser files. [[1](https://support.mozilla.org/en-US/questions/1234222)] - Detail the Extensions: Confirm you tested it with all extensions (including ESET and RoboForm) completely disabled, and the issue persisted. - Identify the Core Bug: Explain that the right-click "Paste" option is stripped only when clicking inside the Rich Text email composition body. [[1](https://proton.me/support/composer)] - Mention the Workaround: Note that Drag-and-Drop text injection works perfectly, meaning the editor container can receive data, but its custom context-menu script is failing to display the native "Paste" command. [[1](https://support.mozilla.org/en-US/questions/1234222)] They will likely log this as a known front-end interface bug and patch it in an upcoming web layout deployment. In the meantime, you can rely on the Drag-and-Drop trick or Ctrl + V to smoothly write your emails! [[1](https://connect.mozilla.org/t5/discussions/right-click-paste-suddenly-stopped-working-in-outlook-email/m-p/34927), [2](https://www.reddit.com/r/ProtonMail/comments/p6j0tp/cant_copypaste_text_into_body_of_protonmail_email/)]

Sent with [Proton Mail](https://proton.me/mail/home) secure email.

Hello,

I have noticed that Firefox is having trouble loading certain elements on my website, [[Check Sephora Gift Card Balance.|https://sephoragiftcardbalancecheck.us/]] Some pages load slowly, while others occasionally display formatting issues or fail to load all content properly.

So far I have tried:

Clearing the Firefox cache and cookies Testing the website in a private browsing window Disabling browser extensions Updating Firefox to the latest version Comparing the website's behavior with other browsers such as Chrome and Edge

The website generally works as expected in other browsers, which makes me think there may be a Firefox-specific compatibility issue. I would appreciate any suggestions on tools, settings, or debugging methods that can help identify the cause of the problem.

Has anyone experienced similar issues with content-heavy websites or found particular Firefox settings that resolved page rendering problems?

Thank you for your assistance.

I've recently switched to Firefox but am finding some of the performance a bit cumbersome. I am continually being asked to hit "Send" ["To display this page, Firefox must send information ..."] when I am logging into my Outlook email or looking at my bank information. I'd rather not be "resending" these pages each time and am wondering if there is a setting.

Edition Windows 11 Pro Version 25H2 Installed on 2025-12-10 OS build 26200.8246 Serial number YX0J28CC Experience Windows Feature Experience Pack 1000.26100.297.0

Thanks, Nancy

Recently, I've been having a problem with signing in to things via my Google account – the problem being that I can't.

Whenever I click on the "sign in with Google", it redirects me to the "accounts.google.com" page, prompting me to choose my account, but once I do, I get redirected to "accounts.google.com/gsi/transform", which is just a blank page with nothing in it (see image attached).

I know this is not a problem with Google, as I have no problem signing in anywhere else.

This happened to me once before, but the reason was one of my extensions, which for some reason interfered with the sign in; however, this time this solution does not work. I tried disabling every single one of my extensions, turning all kinds of protections in the settings on and off, deleting all cache for all relevant sites, but to no avail.

I of course also tried looking this problem up on the internet, but whenever I found someone with this problem, the solution that worked for them was always just disabling an extension.

Thank you for any answer.

Opening a share.google link (maps) no longer work

https://share.google/kVUXU2EtzxFCeVvES

Whenever I search for images on Google, it completely breaks Google search completely. For example, if I search for "bananas" then on the main Results page it has some results and then some sections with drop down menus for more specific questions like "What are the benefits of bananas?" etc. But if I click on the "Images" tab, then it only loads around 6-7 rows of images before failing to load any more, clicking on the images that it does load will not open a website or the typical preview panel, and going back to the main results page from that broken images tab results in none of the drop down buttons working any more.

If I sign out of my Google account completely or even sign into a different Google account, then everything works as normal. If I sign into the same Google account and attempt the same process in a different browser (Edge) then everything works as normal. I initially thought this must be an issue with my Google account since signing out/into a different account caused the issue to disappear, but the I only have this problem specifically on the specific combination of this one particular Google account and the Firefox browser.

I have tried clearing site data, disabling/deleting extensions, and even fully uninstalling and reinstalling Firefox so far and nothing has helped.

Content Security policy blocks essential scripts no matter what I do.

It's new Firefox installation, Troubleshoot mode, Enhanced tracking disabled, I'm not on VPN, can log into X.com in another browser just fine.

It's the reason #1 I don't use Firefox. I thought the issue would be fixed but it has been like this for long time.

Yet whatever I do, whatever I turn off this pops up:

Content-Security-Policy: The page’s settings blocked the loading of a resource (default-src) at https://abs.twimg.com/responsive-web/client-web/bundle.Conversation.721fc4aa.js because it violates the following directive: “default-src 'self'”

The screenshot is from Zen, but it uses Firefox and the issue is the same in Firefox.

Using mouse to click at start of material to copy (word, words, sentence, paragraph etc.) then holding mouse clicker down and drag across desired text to copy shows no effect. No color change. No shading. If I assume invisible highlight to copy (Command "C") then paste using Command "V". No paste.

Safari and Google Chrome highlight work well.

Firefox used to allow Highlight until recent update.

The summary says it all, I think. My desktop runs Win 11, Firefox as default browser, synced to all my devices. My emergency backup (very old/slow) laptop runs Win 10, Firefox default browser, synced. I can login to my Etsy account on the laptop. Desktop login attempt, I get an "error occurred" failure. Have emptied cookies/history/rebooted and have changed email & password for account (using laptop) to no avail.

Is there a Firefox setting I should look into on my desktop ?

this new version is horrible. I go to Facebook and it either does not come up or it takes forever. It does it with addons on and off and i do not get half of what i post and there are just colored square no post all when i go to my page but yet it works just fine in Chrome with both extension on and off. I have cleared the cache history etc and still nothing have removed some add ons added some adblockers and it will not let me me see my notifications for at least 5 minutes and that is about how long it takes for it to work on fiirefox with and with out extensions it is a little better with out add ons If this happens with add on you recommend then why do i need them why have and offer theme them if it causes this. have tried contacting Met AI and Facebook but it only happens with Firefox why do this if it aint broke do not fix it

Hi everyone,

I run a construction estimating website where we share project-based cost estimates and detailed breakdown for contractors, architects

I’ve noticed a weird issue in Firefox lately.

Some of the heavier pages (especially ones with large tables, detailed breakdowns, and embedded content) start getting really slow or sometimes even become unresponsive in Firefox. The same pages load completely fine and smooth in Chrome, so I’m trying to understand what Firefox might be struggling with specifically.

I already tried the basic stuff like clearing cache, testing in private mode, and disabling extensions, but the issue still keeps coming back.

It seems more noticeable on pages with a lot of structured data and embedded elements, so I’m wondering if it could be a rendering, memory, or layout issue on Firefox’s side.

Has anyone dealt with similar performance issues on Firefox with data-heavy or content-heavy web pages?

What should I look into next: layout structure, CSS rendering, JS execution, or something Firefox-specific I might be missing?

Any guidance or debugging tips would be really appreciated!!

Firefox is up to date, Windows 11.

I frequently watch BBC videos but approx one week ago, they stopped playing. I have your VPN which is usually off as it give me no advantage, (this appeared following the last update), but I've tried switching on and changing to UK location. No change.

Can you give me some suggestions please?

My files are stored on external hard drives within Dropbox. The hard drives are mapped to my computer. I can no longer attach files from these drives to anything through Firefox. I can still attach through Chrome, Bing, Safari etc. Any suggestions how to solve this problem. I am NOT attaching through the Dropbox website. I am attaching through the full path showing drive etc. Thank you.

I play https://crazyshooters.com/ and https://crazyshooters2.com/ a lot! But the game became laggy since Firefox 148 and my ping spikes up. Other browsers play fine. I am on Linux Mint if that helps. (147 and below run fine)

When I hit enter after clicking youtube.com , my screen turns into grey spots where the videos should show and no other written info on screen. What is going on??? I can go in when Safari or chrome.

Hi everyone,

I'm currently migrating my Android automation setup (using uiautomator2) from Chrome to Firefox because Chrome frequently drops the accessibility tree. However, I've run into a specific issue regarding how Firefox handles external app intents via JavaScript redirects.

Scenario: A webpage opens a new tab and executes the following script to redirect the user: window.location.href = "https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cad=rja&url=https://www.youtube.com/watch?v=ZLh5orBSaS4";

Expected Behavior (What Chrome does): Chrome detects the YouTube link, automatically triggers the intent to open the native YouTube Android app, and closes that redirect tab.

Actual Behavior (What Firefox does): Firefox simply navigates to m.youtube.com within the browser tab and does not open the native YouTube app.

Additional Context:

I have the "Open links in apps" setting enabled in Firefox settings, but it doesn't seem to trigger for this specific window.location.href redirect.

Because I rely on uiautomator2 for my workflow, having Firefox trap the link inside the browser instead of handing it off to the YouTube app breaks the automation chain.

Is there a known workaround, or perhaps a specific flag in about:config (I can use Firefox Beta/Nightly if needed) to force Firefox Android to respect the deep link/intent and open the native app for this type of redirect?

Any insights or suggestions would be greatly appreciated. Thank you!