Unions disappearing / turning invisible after creation

[rogeriodec_games]

In my case, as I reported below, I need to use SubtractAsync, I need to create walls via Server Script, since the windows must be positioned in a flexible way, depending on the wall size.

So what now?
Do I have to remove this feature from my game?
Or how long should I wait until this bug is fixed?

Sometimes a material is not being shown in part

I don’t know why, but sometimes, when I start the game, although a part is correctly created, it’s appearing as completely transparent, like this wall: [image] However, its properties are ok: [image] If I stop the game and run it again, the part is correctly shown: [image] The Output Window shows no errors… Is there a way to avoid this?