Whilst playing on a server with some friends, I noticed the console fill up with a debug message.
[15:14:03] [Server thread/DEBUG]: Unhandled/unknown player action type 17 from squidjgamingThe server has no plugins or anything. I will keep testing to get a more specific cause.
It's something to do with punching blocks in spectator mode last I checked. Not certain of that though.
The thought of this going unnoticed if dktapps did not add the unhanded action message.
17 = break in A/SPC, 16 = place in A/SPC
This appears to be the Build Denied action from Education Edition. MCPE does not send this action anymore, so I'm going to close this.