Bugs:
Bug Number 1:
War3MapPreview does not work anymore, you used to be able to use War3mapPreview (often being a .tga file) to set your minimap preview for the game, however with Reforged this was broken.
There is a workaround now but it is more work for a feature that was broken, which involves setting your minimap to something different, then in-game with code replacing it on run-time, as you can guess, this would be unnecessary work if it were to be fixed.
Bug Number 2:
This bug right here is editor related, when you load a map (at least in SD mode) you get an error that says “failed to load environment”, I believe that is related to why this specific error happens, if you replace tilesets in the game with custom ones, your minimap doesn’t render the color of the replaced tileset correctly:
How it’s supposed to look:
https://i.imgur.com/f5sQamJ.png
How it actually looks due to the bug:
https://i.imgur.com/Q6io2BT.png
This is not just editor only, in-game it has the same issue.