I did search - but for ESR 115, not for ESR115. Sorry, my fault.
There is a slight difference between the threads though. The instant topic concerns user experiences with the new browser, while “Gecko ESR115 development” directly addresses Devs. Some user may not think of the new browser when reading “Gecko ESR115 development”
When, on 5.2.0.16+, using upload file filter with both audio and video file extensions allowed it seems to only give access to audio without option to navigate elsewhere to select video files. Not very extensively tested, so would not say it is like this, but maybe someone already stumbled onto this and potentially can confirm?
Issue: links to Instagram “reels” cannot be played in the browser. The same links work on PC (Firefox, Chromium, under linux). It says the “intent” protocol isn’t supported.
I tested the ESR 140 port in openrepos and it worked much better, but ESR 153 version worked much worse, there is some regression on that version currently.