Why am I seeing irrational behavior placing tiles in a tile map

So I am working on a 2d game and running into strange behavior when trying to add tiles to a tile map. The first layer seems to work fine but if I add a new layer it will always place the same tile and sometimes changes tiles that are already placed to something else. Here is a video of the behavior. Anyone have any ideas on what might be causing it?
Video can be seen here https://drive.google.com/file/d/1Y7J-HfdzlBDvU7EGC7kgCk9kNLaVBgCX/view?usp=sharing.

Update
This might be related to this but I’m not 100% for sure UE-72279