I got this issue multiple times on two characters (bishop and chief bandit) Server time 13:59 ch11 map "Phantom Forest - Creeping Evil" - IGN DamienShad was standing still in dark sight and got a black screen Server time 14:01 ch11 map "Phantom Forest - Creeping Evil" - IGN Damiian got hit by a HH a few times while dropping mesos, when auto pot used Ginger Ale I got a black screen upon clicking the yellow mesos icon in inventory Server time 14:15 ch19 map "Phantom Forest - Creeping Evil" - IGN DamienShad killed a leprechaun then 2~3 sec after that I tried to drop mesos and got a black screen upon clicking the yellow mesos icon in inventory Maybe you can check some server logs for those two characters at mentioned server times, maybe they will reveal something about this problem. I tried to troubleshoot it but I can't find any pattern in this issue. Sometimes I get a black screen when I try to drop the very first meso while standing still, sometimes I get a black screen when dropping and getting hit at the same time, but most of the time I can drop however many I want while getting hit or while standing still without any issues. I'll update the post if I notice any more scenarios that cause this issue.
getting these black screens no matter what im doing, can just be stood in a town, happens more often when being body hit by mobs