Effects currently active: None
Tools And Effects: None
Ping: 31ms
How often it occurs: Very Often. Simply stand on top of a closed trap door and try to open it so you will fall down. This bug will most likely happen.
What should happen: The trap door should open and you should fall through it.
What is happening: When trying to open a trapdoor underneath you, it glitches out, making the opening noise repeatedly. The player falls for a 2nd but is then put back where he was. This is for trapdoors in your own claims.