Fixed

• Fixed some Settings section headings showing placeholder text instead of the translated name in certain languages. (Bug 2047983)

• Fixed New Tab content not matching the browser's display language after it was changed. (Bug 2046945)

• Fixed a regression that could break playback of some MP4 video files. (Bug 2047467)

• Fixed a performance regression that could slow down sites performing many encryption and decryption operations at once, such as Proton Drive. (Bug 2046401)

• Reference link to 152.0.1 release notes.

Unresolved

• Some users with a language pack installed may experience high memory usage and an unresponsive browser on startup. (Fixed in 152.0.3 in Bug 2049845)