Firefox 86.0.1 is here as a bug fix update that fixes a frequent crash on Linux systems that occurred during browser launch, an issue causing windows to unexpectedly gain or lose focus, as well as an issue causing unexpected behavior with extensions managing tab groups.
In addition, Firefox 86.0.1 addresses a bug with the truncation of date and time widgets due to incorrect width calculation and fixes an issue that caused the web browser to be unresponsive after system sleep on Apple Silicon machines.