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Whenever I have to restart my cpu, the menu bar appears to try to open all of the tabs and it causes system hangups and says that Mozilla Firefox is not responding. What causes this ??

Noticed that Firefox on IOS was updated about 17 hours ago, so that may explain the current issue. When I open the app on my phone, it will be on the page I was last on, but would be frozen. Cannot add a new tab. Cannot add an address to in address bar. Nothing can be done u til I force quit the app, and then reopen the app afterwards (as long as I give it a couple seconds afterwards). Didn’t have this issue the day before.

For the past few days, the text in the address bar can no longer be selected or edited using the mouse or keyboard. The “Customize Toolbar” option does not allow you to remove the address bar from the toolbar.

Unfortunately, compatibility mode doesn't help here either. The problem isn't caused by a plugin.

Is there any way to fix this without losing all my Firefox settings and add-ons? I'm hesitant to try repairing Firefox.

Windows 11 Pro 25H2 64-Bit/Firefox 154.0b5 (64-Bit)

Most of time when I open the Firefox app on my iPhone, it freezes on the homepage. I am unable to use the search bar or anything (other apps on my phone work fine, and I am able to swipe down my notifications so I pretty sure it’s the app misbehaving). I usually have to open and close the app a few times now for it to get going. I’ve tried closing all tabs, it makes no difference. I’ve also tried clearing my cache and browsing data but it didn’t help. Really inconvenient! Would appreciate any help.

The complete page I'm looking at, blurs when my desk top page changes. When I mouse over the page the blur clears up just under my mouse. Now you might want to focus on desktop but changing taps also cause a blur. When I say blur i am talking the hole page. I'm using Arial and have ran clear text on both monitors it all so seem worst when I used the new side tab load. Never had an issue on older fox loads. Submitting from my laptop not from affected computer.

I use chat GPT all the time every time I use it it bogs down and a warning drops down and says this program is slowing down Firefox stop the program it doesn't happen with Gemini it doesn't happen with Claude only chat GPT how can I fix this problem

When I try to browse the webpage still not show anything or loading about 30-50 Second before start loading. Sometimes it get freeze not show anything need to re-enter url.

Firefox hangs when Thunderbird is open. At this moment, Thunderbird is not open and Firefox is hanging on opening any web page. I had to use Chrome to get to this site and request help. Here is info about my PC:

Device Name Ginny-PC Processor Intel(R) Core(TM) i5-4430 CPU @ 3.00GHz 3.00 GHz Installed RAM 8.00 GB (7.88 GB usable) Storage 233 GB HDD Hitachi HDP725025GLA380, 466 GB HDD ST500DM002-1BD142 Graphics Card Intel(R) HD Graphics 4600 (113 MB) Device ID 13E09BB5-804A-4882-A64D-CA16EABC9EF4 Product ID 00330-80000-00000-AA914 System Type 64-bit operating system, x64-based processor Pen and touch No pen or touch input is available for this display

Edition Windows 10 Pro Version 22H2 Installed on 9/8/2020 OS Build 19045.6466

Hi

I have notice when there are multiple tabs open and multiple extension running the app seem to lag with page reloading ( youtube, google, insta)

Also PIP for youtube is broken with maybe hyperos 3 Youtube controller or browser customize controller for youtube

Kindly check that

I have realised if browser is optimized well then it can replace many social media app with more privacy and customization

Device Xiaomi 17 ultra Os- hyperos 3.0.2.0 WPAINXM Android version: 16BP2A.250605.031.A3

I have noticed for some time when I access Facebook the site reacts very slowly and hangs up frequently. When I access Facebook on the Chrome browser I don't experience the same problems. So, it appears my Facebook issue is a Firefox browser issue. Can anyone please help and explain how I can improve my Facebook experience while using Firefox. Appreciate any help. Thank you.

After updating to Firefox 153.0.1 on my 2026 MacBook Pro Silicon running Tahoe 26.5.2, my Firefox sidebar refuses to open, either by toggling the menu bookmark sidebar icon or pressing the shortcut keys.

Hello! Since the latest update to Firefox (153, I believe) my Firefox has not worked. It starts up perfectly fine, but quickly freezes, becomes non-responsive, and needs to be closed. No matter how many times I attempt to open it, the same thing occurs. There’s been been occasions where it hasn’t frozen immediately so I have been able to turn off hardware acceleration as well as remove my theme and disable all my add-ons/extensions, but this has done nothing. Creating a new profile does not help, nor does trying Safe Mode: the same thing happens no matter what. I tried to reinstall the update, but this also did nothing. I haven’t yet tried to uninstall & reinstall or do a Firefox refresh as those are my last resorts and I won’t do them unless I’m sure they’ll make a difference. I haven’t downloaded any new extensions recently, and this only started happening after the most recent update. I’m not sure what else I can try at this point, and am very frustrated.

On a new laptop with Win11 Home (x86-64) with Firefox just installed, the cache size is 54 MB. When Privacy and Security -> Clear Browsing Data is clicked, Firefox hangs - no input is accepted and nothing appears to be happening. On closing Firefox and then reopening the cache size is reduced and Clear Browsing Data operates as expected.

Why is the cache size (54 MB) so large? Why does Clear Browsing Data hang Firefox?