Burried treasure 1.16.5 and 1.17

I am running a 1.16.5 papermc server on aternos with structure generation on. My burried treasures aren’t spawning in. I tried to check with spectator mode even. Also tried regenerating chunks using some external tools to delete chunks and reload them again. Now updated to 1.17 paper but still the issue persists. Can someone help me out?

sorry for just a “me too post”, but I believe I too am having this same issue… 1.17-68
Tried 3 maps so far… and nothing to be found. Anyone else having this issue?

i did find this: