Nope, checked all maps just to be sure :/
Viewing post in Minimap for RPG Maker MV & MZ comments
I cannot reproduce it, neither MV nor MZ, nor local nor web browser deployment. I wonder if it is an OS problem, as I only have Windows devices at home.
The last thing that comes to my mind is that when starting your game, you can press F12 to open the debug console, go to the "Console" tab, and check for error messages there.
When you feel comfortable, you can send me your project via mail@aerosys.blog