2 hours ago, Dracula said:
So, not changing visually to the corresponding terrain is "working as intended" to them?
This started in A18.
AFAIK it is a technical limitation and this is the least worst solution at the moment. Many limitations are because of the graphics engine (Unity) where they just have to accept or work around bugs or hard limits in the engine.
I would suggest asking about this again whenever they say they updated to a new version of Unity as a new version might lift the limitation or provide alternative ways.