Do not use trapdoors or doors in boss walls

Something I've noticed during my many, many attempts at defeating Tasim is that I'm often unfairly hindered by the mechanics of the walls. If I'm right next to a wall and trying to Teleport, I can't, because trapdoor and door blocks are weird and I may be misdetected as inside one. I can accidentally open the trapdoors and doors, creating unintended obstructions and interfering with spell inputs. The obvious solution is to just use regular wood blocks. I don't see why this wasn't done originally.

I can't remember other similar incidents in other fights, but it's possible there were some of these. It's most noticeable for me against Tasim because his arena is strangely small and I attempt him a lot.