I just found a work around!!!
- Navigate to C:\Users\User\Saved Games\Diablo II Resurrected
- Delete the files that refer to your online map (online.ma1)(online.ma2) etc…
- Restart Diablo 2 Resurrected.
You will have to do this in between games to avoid the mini maps from stacking.
Hope this helps, enjoy!
~a409tiger