If the developer and nightly versions of Firefox 9which are supposed to work properly) make you uncomfortable there are firefox versions that can deliver the same usability and are not affected by this bug.

If you use Android, you can get Fennec from the F-Droid online store.

If you use Windows, you can get Waterfox here: https://www.waterfox.net/

Fennec is just a fork of Firefox with telemetry disabled by default and known third party trackers removed.

Waterfox is a fork of Firefox that tries to be more geared toward users who want more control, its main differences are telemetry is disabled by default and it is supposed to support more extensions but I have not tested this out.