Windows 11 21H2
If you shut down Lightroom Classic 11.3.1 with the Library Module showing, then re-launch later, the Map Module works fine.
If you shut down Lightroom Classic 11.3.1 with the Map Module showing, and then re-launch later, the Map Module is not usable. The exact form of the error changes, its not always the same, sometimes I get JavaScript error, sometimes the Map Module just freezes, other times it has other errors, but the Map Module simply doesn't work in this situation.