Fixed an issue for OPFS users (especially those using the Adobe Photoshop) that broke access to files that were locally cached in a previous version. (bug 1847989, bug 1847619)

Fixed an issue that was breaking screensharing for some users on Wayland. (bug 1841851)

Fixed an issue where a fullscreen notification was persistently being shown to a user, even after disabling it. (bug 1847901)

Fixed an issue where Firefox would hang when doing a Google search. (bug 1847066)

Unresolved
A few photoshop users might still encounter issues loading old files which is expected to be resolved in bug 1848916.

On android, even DDG takes ages to load search results for me

Yeah the article is specific to a recent change. FF browser is still awesome

You can vote for this to be built-in here:

https://connect.mozilla.org/t5/ideas/more-tab-detail-eg-preview-url-when-hovering-over-a-tab/idc-p/15709