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Hi,

I installed Debian 12 on my laptop. I'm using Firefox 133.0.3 from Flatpak. When the browser is in full screen and I display a video in full screen mode, strangely, the video is not in full screen... It's on the top left corner and the rest of the page is in violet. I tested on different site, loading a local video and the issue is the same. I can't reproduce the issue on my desktop computer on Windows. When the browser is not in full screen (F11) and I put the video in full screen mode, there is no issue... I attached a screenshot of the situation.

Have you ever encountered this kind of issue? How to resolve it?

Thanks

Hello,

Steps to follow for both private and public browsing. 1. Open app, new page, search using DDG or Google. 2. Select Wikipedia link from search list

Expected behavior: open Wikipedia app Current behavior: site loads in the browser

Firefox 134.0 (49061) Wikipedia 7.6.2 (4512)

For comparison do not have this issue with imdb

There seems to be a link missing when viewing LinkedIn profiles using Firefox. In MS Edge, I have the option to click on 'see more' to view the full 'About' section, whereas this is not showing in Firefox (attached screen-shots refer). I've contacted LinkedIn, who say that it's not their issue! I certainly used to be able to expand this section in Firefox; not sure why that functionality is no longer there. Any suggestions? Many thanks for your help.

We have an application running on Firefox and noticed that with new Firefox ESR, Ajax call (XMLHttpRequest ) from js script running on Firefox browser on thin clients seems to be blocked frequently (same call succeed most of the time, but blocked from time to time). Issue was raised starting with Firefox 128.2.0esr), but in general persist with newer Firefox ESR. We tried replacing XMLHttpRequest with fetch which seems making no much difference so far.

Hello,

When I open the developer tools (using F12) and I check the disable cache checkbox of the network tab, I get CORS errors saying that `Cross-Origin Request Blocked: The Same Origin Policy disallows reading the remote resource at https://<my-resource>. (Reason: CORS header ‘Access-Control-Allow-Origin’ missing).`.

From my understanding, since the requests triggering the errors have the `Cache-Control` header set (due to the cache disabling), these requests do not qualify as simple requests (https://developer.mozilla.org/en-US/docs/Web/HTTP/CORS#simple_requests). That’s why the server (AWS CloudFront) does not return CORS headers. However, I do not understand why Firefox did not send preflight requests (https://developer.mozilla.org/en-US/docs/Glossary/Preflight_request) in these cases.

Did I miss something? Or am I hitting a bug in Firefox?

Regards

My WSJ.com user info correctly loads the Wall Street Journal front page. When I click for a particular story, Firefox often loads the page but immediately erases it and says, "Application error: client-side exception. See console for further information." It does not happen every time, and I have not encountered it with any other website.

I use the latest Windows 10 and fully updated Firefox.