There’s something not user-friendly here.
Alan’s tip does not work. TB --profile-manager does not take account of the new data.
Running TB 78.2.1 (edge channel at the moment) I had to:
- launch TB snap
- close TB snap
- delete the snap profile’s folder content
- copy all the old profile folder content in the snap profile folder
- launch TB snap
- remove all the unused langpacks in TB extensions menu (to have full native language in TB)
- restart TB