Level 5's time's up on level 6 in Demon tower

[Xeon Möster 0]

If you are also an old metin2 player you probably know that back in the days there was a bug in the demon tower that the 5th floor's timer could teleport you out from the 6th floor sometimes. I remember back then i was like 14 years old and when i found the rain files i looked through the demon tower quest and couldnt find what could've caused the issue. Recently i downloaded the rain files out of nostalgia and curiosity and even tho i have a lot more experience in programming now i don't really see any issues with the quest.

Does anyone know what could have caused this issue back in the days? As far as I know rain files is 2008-2009 and i started playing mid 2009 and also remember that it took shitforge quite some time to fix this so the bug should still be present in rain files. (Unless gameforge caused this issue after the rain files got out?)