Unfortunately, the standard map editor has serious drawbacks that could not be resolved with its functionality; whether these are bugs or not is up to you to decide.
This is precisely what led to the emergence of IRMG a few years ago; I think you understand that if everything could be resolved within the standard map editor, no one would have spent so much time writing their own generator.
the initial level of skill in the built-in map editor is more than sufficient.

Барон "Vampires"
Отдай свои прошлые сны,
В сомненьях себя обрети,
В бешеном танце душа кружится!
Не думай, что будет потом,
Здесь и сейчас мы живем,
Стань хоть на миг сам собой, слышишь!