these blocks actually appear after I killed myself, so it duplicates MC72248
well i found that it seems to duplicate MC72248, but the problems talked there is that the block is invisible, which means that it's still there, and in this version it is not there, but people could just not able to pass through it, so I don't know if it is or not.
still crashed using 18w15a snapshot
Well, I don't really sure if it is duplicated or not, but none of the issues with keyword "crash" and "structure block" that is confirmed tells exactly the same thing. I promise that this is true and it does happen, and I could attach my save heer if it is needed.
alright, I just wonder if that is intended or not so I checked minecraft wiki before I submit this issue, but the wiki didn't tell me that, the internet neither. sorry for interrupting you
by the way, effect also stay unchanged after I have reloaded even though I cleared it