Same thing happened to me
I got 3 different stacks of leaves that won’t stack with each other at all
Also to the bot that reported this a duplicate this is a different problem I haven’t broken What’s under it to check that it’s floating but I just can’t climb through the scaffolding at the cords
To the people saying that it can’t be replicated both worlds were updated from 1.17 to 1.18 and it only happens at 0,0,0 and only with scaffolding it happened on 2 worlds one that I don’t even own other people on the world also had that issue and on my own private world I also had it the world I first noticed it was a sever and I check my private world to check it wasn’t it’s bedrock
this is some evidence of a similar problem