Hello,
There’s still research to be done on my end, but wanted to give two more suggestions to look at in the meantime.
In the Show Flags menu, you can view bounds by going to Advanced->Bounds. If there is an actor with bounds larger than normal, you should be able to visualize it this way.
I also found that the world max size is 88 million kilometers, which seems to be the size of your minimap size. I saw another user with the same issue (though they were using UEFN), and their world bounds were the same value.
In your project, you could check to see where the WORLD_MAX size is being used, and if it is interfering with the minimap size calculations.
You can also reduce the size of WORLD_MAX by setting it to a lower value, and see if the behavior changes.
Let me know if this helps solve your issue! I will be doing more research on my end to see if there’s anything else helpful I can find.
Thanks,
Kyle B.