I was standing on the lower half of a slab and accidentally tried to place the upper slab directly under me, causing the block to fail to be placed, however, it gave a message saying "Height limit for building is 255 blocks"
It shouldn't have shown this message since where I tried to place the block was still in the height limit
(This was in the nether so the height limit wasn't 319)
I was unable to reproduce this issue in 1.20.1, and the only possible cause I can think of is MC-11211, which was fixed over three years ago. Could you please attach an F3 screenshot or a video to this issue? Thank you 🙂