this is a bug tracker, not a support site.
I am pretty sure Villagers are too tall to fit through that space, and that this is not a bug.
pretty sure this is a dupe of a 'won't fix'
could it be this is an issue with the resource pack, and not the game?
You have to click on the trade you want
Can confirm, upon loading up a superflat with the above mention preset, I was confronted with 2 Desert Temples, a Jungle Temple, a Shipwreck, and a bunch of Underwater Ruins
This is intentional. The 20w14infinite worlds use a 'special-level.dat' file whereas 20w13b and below use 'level.dat'
Is gamerule sendCommandFeedback false?
This is quasi connectivity, a feature that has been in the game for a while.
So I'd say this is working as intended.
If you go into previous versions, you will see this exact behavior.
this is for java edition issues only, https://bugs.mojang.com/projects/MCPE/ is for bedrock issues