Fixed

• Fixed Firefox becoming unresponsive on some pages that use CSS blur and backdrop filters together. (Bug 2068836)

• Fixed the sidebar not reappearing after restarting Firefox when the "Hide tabs and sidebar" option was turned on. (Bug 2065431)

• Fixed some profile icons not being displayed in the account and application menus. (Bug 2064729, Bug 2067734)

• Fixed the current device being listed among connected devices in the account menu. (Bug 2059763)

• Reference link to 155.0 release notes.

Unresolved

• Standard dynamic range (SDR) video in some formats can appear washed out on macOS. The issue is under investigation and a fix will ship in a future release. (Bug 2068961)