While manipulating a block, if you transforms it into a face, and before releasing the mouse, you switch tools using a keybind, the game forgets to delete the face. And if you use the fill tool, it gets really buggy.
Check out the video.
This can be related with this thread.
I only tested this because i watched the devlog xD
This is the same issue, at least something into this kind of problem, that i have already “reported” on Blokoto server in general chat, but it was while manipulating the face against the other added to using extension tool in a specific way, and there is a bug lefting a single block face depending on its orientation creating the bug.
This is what i’m talking about: