[Map] Advance Map warps lead to black screen

I have included a video attachment that shows the problem.

https://youtu.be/NET-DpttSg0

Basically, warps I create in Advance Map are correct and connect to the right map in-program, but when I try to use the warp in emulator it either warps to a blank map or 127, 127, 127.

This only happens to maps that I have recently inserted. Other warps work perfectly fine, including warps to other maps I added earlier in development.

Any advice on how to fix this would be very much appreciated!

Make sure to replace the map with itself. Open your map in advance map, go to "insert map" and lets say your map bank is 3 and map number is 1, then next to where the "replace" button is put 3 as map bank and 1 as map number.