Firefox Support Forum

When the system theme (light/dark) is switched globally, Firefox recognizes this and also switches its theme automatically (if configured appropriately). This should also retheme addons opened in the sidebar (Tab Stash or Sidebery for instance), and it does so under certain conditions, namely if either a) no sidebar was opened when starting Firefox and the addon sidebar window is opened directly, or b) the sidebar was opened with start of Firefox. Unfortunately, no retheming of the addon window occurs when some other Firefox sidebar (such as bookmarks or history) was opened after Firefox start and before system theme switch. In that case, the addon window (which is opened as the system theme is switched) does not retheme. This can be mitigated by either restarting Firefox or by opening a Firefox sidebar such as bookmarks or history, and switching back to the addon window.

So to reproduce this behaviour:

1. Open Firefox and some sidebar addon directly (such as Tab Stash in my case, with Ctrl-Alt-S)
2. Switch system theme globally (I do this with Night Theme Switcher in GNOME)
3. Observe that Firefox correctly redraws the addon window
4. Open bookmarks (Ctrl-B) or history (Ctrl-H)
5. Reopen the addon window
6. Switch system theme globally again
7. Observe that Firefox does not correctly redraw the addon window
8. Open bookmarks (Ctrl-B) or history (Ctrl-H) again
9. Reopen the addon window
10. Observe that Firefox redrew the addon window

This has already been reported to the addon developer, who stated that it might be a bug in Firefox, since his addon only tells Firefox which colors to use in which mode.

System details:

• OS Version: Linux 6.7.4-arch1-1
• Browser Version: Firefox 122.0.1
• Desktop environment: GNOME

Hi! Relaying this for another Firefox user. Whenever they go to Google Images, it seems like the images don't fully load. GIFs don't play, and it ends up showing the preview rather than the full image. This isn't happening on other sites like Bing. Any ideas what could be causing this? A uninstall and reinstall didn't help.

Thank you so much!

Currently, there appears to be only one option to tell Firefox to open a given site in a specific container; that is, from the URL bar, to the right.

Would it make sense to have this configuration option presented in "edit bookmark" and/or in a right-click pulldown menu "Always open in this container"?

When you switch the language in a text field, the focus on that text field is lost and the focus goes to another browser tab. This only happens if at this time a video is playing in mozilla in picture in picture mode with the Always on top option enabled. How to fix it? (Ubuntu 22.04)

Firefox is frequently deleting entries made on websites. I am entering information in boxes (like this one) on websites when suddenly FF bails out, the data vanishes off the screen and leaves me back where I started. It happened several times attempting to post this question. This seems to have something to do with hitting a key or the space bar--but what and why eludes me. I have tried changing settings on trackpad and mouse without any impact. Although this is a recent issue with a new computer, the issue does not occur using the same computer on Chrome. Any ideas?

The Command+M keyboard shortcut only minimizes Firefox one time after the initial boot of the system and stop working thereafter. Opening the Window menu in the top menu bar and then clicking minimize also fails to minimize Firefox. The only thing that works to minimize the Firefox window is clicking on the minimize bar on the top left of the window.

How do I get COMMAND + M to consistently minimize Firefox?

I had Wavve.co app installed on my laptop. Was using it but started to have problems (ie, the app slowing and then not working at all). Firefox showed me a message that said something to the effect that this page was slowing down the browser, did I want to "Stop Page"?

So I clicked "Stop Page", but now even after doing a reset to a date PRIOR to installing the app, I still cannot access the app on this laptop. Will I now need to switch to another browser to continue working with Wavve? Is there ANY way to UNDO that action? Suggestions?

Thanks in advance for your help.

I can not log into my Harley ride planner account. Its not the websight as I can log in on my I phone. I get this message.The resource at “https://www.harley-davidson.com/etc/designs/h-d/images/dropdown-arrow-white-2.png” was blocked by OpaqueResponseBlocking. Reason: “nosniff is true and mimeType is an opaque-blocklisted MIME type or its essence is 'text/plain'”. How do I fix this? Thank you Paul

Hi,

What is the area above toolbox called (Firefox, File, Edit, View, History, Bookmarks, Tools, Window, Help) and how do I change color on just that?

Thank You, Leslie

I just installed FireFox but keep getting Chrome browser. How do I set FireFox as my default browser? My bookmark tab icons keep changing - how to change them back permanently ?

Hello, I'm using a document management system (SeedDMS for those who know) through Firefox 122.0.1 (64-bit, canonical 1.0, downloaded from packages.ubuntu.com for focal, running on Debian Bookworm, kernel 6.1.0-17-amd64/Debian 6.1.69-1 x86_64, X.Org X Server 1.21.1.7, KDE Plasma 5.27.5, KDE Framework 5.103.0, QT 5.15.8, i7-5820K, GeForce GTX 1070).

Within this document management system pdf.js (v4.0.379) is being used to preview/view PDF Documents. After starting Firefox the PDF view inside the DMS works fine until I suspend (to memory) and resume my machine. Regular HTML-content looks fine but the resumed DMS session shows only blank (all white) Pages inside the PDF view. Changing to a different PDF file doesn't help. The number and size of these pages is presented correctly. I can even select and copy (invisible) text from these blank PDF pages. The problem applies to all PDFs, whether they're single or multi paged, have images inside them (like with PDFs from a scanner) or not, etc. Reloading the page/closing reopening the affected browser window doesn't help, i.e. the problem persists.

I recently found out, that this also applies to PDF files directly opened inside Firefox (which also seems to use pdf.js as a PDF viewer), that is, this is not related to a specific site like my DMS.

The problem always persists until I kill Firefox and start it over.

Pdf.js seems to use a canvas inside a div (see screenshots attached) to draw the visual PDF content and another div to make the text layer selectable/searchable etc. I don't know what's happening to canvases on a system suspend/resume cycle in Firefox on Linux, but I suspect that's where the problem originates from.

This problem already affected older versions of Firefox and pdf.js.

Please let me know, if you need further information from my side to investigate that issue.

Thanks a lot!

I've tried a few addons that download website images but the website I go to has thumbnails that are linked to larger jpg's and addons I've used won't download the linked jpg's. I used "Download all images" addon which has a "Deep Search Option" and filters for downloading linked images but I can't get it to work. I couldn't figure out how to use the filters. I read about another addon called "download-links" that can search linked images and I might give it a try. Any suggestions? Has anyone tried "Download all images" addon?

Здравствуйте. К своему стыду не могу разобраться. Поставил опции, во вкладке безопасность, удалять Куки и Историю по выходу из Firefox. При этом история сохраняется, при последующем запуске браузера. Так же при следующем запуске браузера, при авторизации на сайтах, автоматически заполняется поле "логин", "телефон". Как сделать что бы не заполнялся и была очищена история? Спасибо.

I have the same problem https://support.mozilla.org/en-US/questions/1421734 it's not a pdf. If I want to print a shipping label from eBay using Firefox nothing happens if I try to make it bigger. I can make it smaller but it is too small to begin with. If I use Brave or Edge (using the same printer) it works I can adjust it and make it bigger up to 200 %. I have already reset the printer options in Firefox and tried when disabling all add-ons.

Locking this thread, please continue here: [/questions/1439818]
windows 10 pro pc show all the booklinks however, synch to an Iphone 14 to ipad 9th generation and it does not synch. I have tried all the fixes and nothing works. Time to stop using Mozilla products? what the devil is going on with the Mozilla staff? Hard to provide a contribution when products don't work!

Midjourney website and also canva was working fine until i tried to open both of them today using firefox, but midjoueny froze and kept making firefox showing not responding and then unfreeze and then freeze and so on, Also canva -as shown in the screenshots- is not working properly, it's laggy and won't load full pages.

I thought it was the websites' problem until i tried chrome - which i really hate to do- and voila, both of them worked fine, no freezing no lagging and pages are loading properly.

Is there any solution for this, because i really hate to use chrome but i am forced to do so until this problem is fixed :'(

I want the tab button to stop navigating any web page. Im tired of the alt tab shortcut moving my focus around and forcing me to completely refresh a page just to interact with it again.

Please do not tell me to use about:config browser.toolbars.keyboard_navigation. It doesnt work because its not what im looking for. I want to disable the tab key in my browser. Period. 100% gone. Stop bothering me ever again type deal.

Is there a way to disable tab key navigation that doesnt require a year of coding experience with an obscure addon that probably doesnt work as of 10 updates ago?