I agree with ampolive. I just created a world in the most recent snapshot (21w42a), and opening the map chest on the shipwreck has a good chance to take ~15 seconds or so to generate/open. 2 of 3 map chests I opened lagged, even though only 1 had a buried treasure map (which was the one chest that opened fine), and I ran the /locate buried treasure command in 3 random locations, of which 2 of the 3 experienced the lag.
This is a very strange issue, and here are some of my thoughts about it. When the chest is generating, I think it has to find the nearest buried treasure and generate that map for it, but as it only has a chance to appear in the chest it might not even generate within the chest. BUT I just checked the wiki, which says that the buried treasure map always spawns, which is certainly not happening right now. As for the command, I assume the target is the starting block for the structure, which for most is a block (or liquid depending on generation location) of some kind, but for the buried treasure it is probably an entity (the chest), so that might have something to do with it,
I agree with ampolive. I just created a world in the most recent snapshot (21w42a), and opening the map chest on the shipwreck has a good chance to take ~15 seconds or so to generate/open. 2 of 3 map chests I opened lagged, even though only 1 had a buried treasure map (which was the one chest that opened fine), and I ran the /locate buried treasure command in 3 random locations, of which 2 of the 3 experienced the lag.
This is a very strange issue, and here are some of my thoughts about it. When the chest is generating, I think it has to find the nearest buried treasure and generate that map for it, but as it only has a chance to appear in the chest it might not even generate within the chest. BUT I just checked the wiki, which says that the buried treasure map always spawns, which is certainly not happening right now. As for the command, I assume the target is the starting block for the structure, which for most is a block (or liquid depending on generation location) of some kind, but for the buried treasure it is probably an entity (the chest), so that might have something to do with it,