Hello !

I'm trying to make a commandBlock system on a realm to open an iron door automatically when a player is less than 2 blocks from the block below the door, except that the door does not open, often if I update the block below the door, or if there is no block below the door (which is very problematic).

So it's a real bug, or I got it wrong. Except that what makes me say that my system is normally functional, it is simply that it worked perfectly well in 1.15.2.

I've share the bug in the map, in the file below