When a trapdoor is at y=255 you can't open it by clicking on the top side of the trapdoor
MC-158403
Trapdoors don't work properly at height limit
Resolved
Duplicate
0
Thank you for your report!
We're actually already tracking this issue in MC-11211, so I resolved and linked this ticket as a duplicate.
If you would like to add a vote and any extra information to the main ticket it would be appreciated.
If you haven't already, you might like to make use of the search feature in the future to see if the issue has already been reported.