Bug: Alpha rather than Stable Tor Browser Stable being installed by tb-updater

Normal that W-Workstation 9.6 downloads and installs the TBB alpha 4.5a?, rather than the current, regular TBB 4.03?

This is a fresh install, using the Whonix ‘Update Tor Browser’ (AnonDist) script/tool.

Edit by Patrick:
Changed title.

No, it’s a bug.

The version file (https://www.torproject.org/projects/torbrowser/RecommendedTBBVersions) format was changed (RecommendedTBBVersions does not advertise alpha versions anymore (#14739) · Issues · Legacy / Trac · GitLab), and there is no stable version of it (finalize RecommendedTBBVersions format (#14383) · Issues · Legacy / Trac · GitLab).

If you want to use the stable version, you have to use these instructions in meanwhile:

Blog post: