I have screenshot for this and already submit a ticket. This problem occurs after the big 24hours update. Please do something about it
Also note that after finish the boss, I got disconnected automatically and I have to relog through character loading screen
I am too having a lot of issues in dungeons, already lost 4 instances due disconnects, my internet connection is fine.
I just don’t know what happened to cause those disconnects
Same.
And the fact that when I finish the dungeon, after a while the game just kick me to the lodge for no reason.
And dc while in dungeon and no way to come back and lose it 
same here, they need to fix these type of BUGS before F2P or it just going get worse…
same here 
The same, the dungeon kicked me two times, I lost 2 intances for this reason. 
Finally doing something useful on Tos forum, i confirm this bug, @duytueha not trolling this time
pls fix that problem!!! T_T i lost my time "
i’ve lost 5 runs yesterday from using my instance scrolls… trying to rush to 160. i could of got 160 by now and then some. they serious need to do fixes more often and not wait weeks to addd them…