Posts tagged with “documentation”

Incompatible change to sessions.restore API in Firefox 54

The add-on compatibility update for Firefox 54 was published a while back, but a backward-incompatible change to the sessions.restore WebExtensions API was uplifted to 54, currently in Beta and set to be released on June 13th. sessions.restore now returns an … Continue reading

The Road to Firefox 57 – Compatibility Milestones

Update: this post was updated to reflect a change in how we determine when Firefox will run in multiprocess mode. Firefox won’t run in multiprocess mode unless add-ons are explicitly declared to be compatible with Multiprocess Firefox. Compatibility shims will … Continue reading