Is your feature request related to a problem? Please describe.
Hi, would it be possible to have a flag/config preference to disable detachable tabs introduced in #494? I often rearrange my tabs, and find myself accidentally detaching instead with the latest update.

Describe the solution you'd like
Option in preferences to disable detachable tab behaviour.

Strangely, I attempted to revert the commits locally and add a preference, but the tabs seemed to remain detachable.