Firefox supportforum

Hi! I am running Firefox on an old MacPro5,1 with MacOS Ventura using Open Core Legacy Patcher. The graphics card is a NVIDIA GeForce GT 630. So overall it's a pretty old setup but everything works fine. However, since day one, I've been having rendering issues with some (not all) videos on Firefox. These videos include some but not all YouTube videos, some embedded animations on websites, and every live stream video. The workaround is pretty straightforward: everything works fine on Safari and Chrome. Still, I am wondering what the issue could be, any help would be appreciated. Attached are two screenshot of what the rendering issues look like.

I just realized that my user agent string is wrong (for instance, it says that I am on OS X 10.15, even though I am on 13.6, not sure if that makes any difference at all.

Dear Sir/Madam:

I am using Firefox Browser 102.15.1esr (64-bit) on a MacBook Pro Ventura 13.5.2.

I have been using the www.dictionary.com website for a long time, but recently when I attempt to go there, I keep getting the error message as follows:

Unexpected Application Error! FM.findLast is not a function

WM@https://www.dictionary.com/client.e12a2de6.js:36:305976 $o@https://www.dictionary.com/client.e12a2de6.js:1:26519 ka@https://www.dictionary.com/vendor.60d89d9a.js:1:864941 xu@https://www.dictionary.com/vendor.60d89d9a.js:1:921923 bc@https://www.dictionary.com/vendor.60d89d9a.js:1:910907 yc@https://www.dictionary.com/vendor.60d89d9a.js:1:910835 vc@https://www.dictionary.com/vendor.60d89d9a.js:1:910696 ic@https://www.dictionary.com/vendor.60d89d9a.js:1:907503 oc@https://www.dictionary.com/vendor.60d89d9a.js:1:906055 E@https://www.dictionary.com/vendor.60d89d9a.js:1:996565 P@https://www.dictionary.com/vendor.60d89d9a.js:1:997096

I tried clearing caches under Privacy & Security, but the problem persists.

(Meanwhile, I can visit www.dictionary.com on Safari and Google Chrome.)

Could you please let me know what is going on?

Thank you,

Roland

I often drag elements on trello.com. Whenever I drag an element, that element seems to double in size, making it hard to see what is underneath. Attached is an example.

I believe this is related to the fact that I am running Linux/X11 and my DPR is 2. From about:support:

• Window Device Pixel Ratios 2,2,2,2
• Window Protocol x11
• OS Linux 6.1.0-13-amd64 #1 SMP PREEMPT_DYNAMIC Debian 6.1.55-1 (2023-09-29)

Is there an about:config setting or anything that will prevent scaling dragged elements?

Firefox seems to get stuck loading pages on the CSO Ireland website For example https://data.cso.ie/table/NIA13

It can be right intermittently but reoccurs again rapidly at random. Other browsers do not seem to have this issue.

I use Google Meet multiple times a day for work meetings. After switching to Firefox from Chrome recently, I have noticed some persistent issues to do with audio from devices external to my laptop. I have a USB external microphone, a USB sound card that powers external speakers, and wired headphones that I use through the laptop's headphone jack. In macOS my default audio input is the external mic, and default output is the wired headphones.

The first issue that I noticed when using Firefox in meetings was that people reported an echoing effect on my audio. Audio from everyone else sounded fine to me. Changing my microphone source in Meet or in macOS did not seem to help, nor did disabling echo canceling in Meet. What did help was disconnecting the USB microphone completely. The impression that I got was that Meet was taking audio from both the USB mic and laptop mic at the same time, even though only the USB mic was selected. This has happened every time I used Meet.

The second issue that I noticed just happened for the first time today. (Note: I now have my USB mic unplugged until I can resolve the mic issue.) In macOS I had my wired headphones set as the audio output device. I joined a meeting, and I was hearing the meeting audio in my headphones and the external speakers (USB sound card) at the same time.

I've used Meet with Chrome for the last few years and never had this type of issue.

Something I have noticed that may be relevant is, when I open Meet in Chrome and go to the Meet settings, it shows my USB sound card and wired headphones as audio input/output options that I can select, in addition to the built-in laptop speakers. But when I open Meet in Firefox, the settings only show the USB sound card and laptop speakers for output - they don't show my wired headphones. FWIW, media.setsink.enabled is set to "true" already - I saw this mentioned as a solution in a similar question from 2022.

Is there anything I can check, or debugging data I can capture when this issue happens, which would help figure out the root cause?

Hi,

This is for https://outlook.live.com where I cannot access my full list of folders. I am using Firefox on Linux (in Fedora 34) and my scrolling feature hasn't been working for a few days now. When I search for an email in one of the inaccessible folders, the folder does appear.

As an idea... I added https://outlook.live.com to the pop-up exemptions, no luck.

Any suggestions on how to fix this?

Many thanks!

When attempting to access the Help & Support section in Microsoft Intune through Firefox 120.0.1 on Windows it remains on a spinning wheel icon. I can access this successfully on the same PC through Microsoft Edge 119.

I have tried clearing out cookies, troubleshooting mode and re-installing Firefox to no avail. I've also tested on another Windows PC and have the same issue.

Many complex websites that had no problem till the latest version of Firefox don't load any more with the newest version. If this goes on like this I have to change my browser. I used Firefox now for many years but it looks like I have to change, as there are no problems with other web browsers (Opera, Edge, Chrome, etc).

Aren't there a lot of feedbacks like mine?

SIncerely, Franz

When viewing any tiktok account profile page, for example this one , the videos do not show up, and says "Something went wrong, Sorry about that! Please try again later."

Here's what i did:

1. Created new Firefox profile with default settings and no extensions
2. Visited a TikTok profile, and saw it opens as expected
3. Changed privacy.resistFingerprinting to true
4. Refreshed the TikTok profile page, and the error message shows up

I opened the console and compared and there were new warnings:

• Blocked https://www.tiktok.com/@tiktok from extracting canvas data because no user input was detected.
• Get user detail failed for getting wrong response

And 3 errors, when there were 0 before, all three read

• Uncaught TypeError: _0x5e9eb8[_0x2bd187] is null