HP bar flicker + DC at Zakum

Description of the bug: I've had this happen four times now all during 3rd body phase of Zakum. During Zakum the boss HP bar will suddenly flicker invisible and visible and other graphical errors will happen like my character's body will flicker invisible and visible except for my face. Also inconsistently I can't use skills or items when the bug starts but sometimes I can. UI panels don't show up when opened and will inconsistently cause instant disconnect or graphical errors as shown in the pic. Even the disconnect is inconsistent with either booting me to login screen or just closing the client or giving an actual runtime-error program crash.

Look closely at the graphical errors over Zakum's body.



^( ? __ ?)>

After disconnect to login screen. I didn't get a pic of the one time that I got the runtime-error but it's the typical message for C++ library runtime-error.



What is supposed to happen?: Normal Zakum with no dc.

Where did you find and/or notice this bug?: During Zakum.

A step-by-step guide to re-producing this bug (optional): Run build 22/1/2018 rev.2 in windowed mode from MapleLegendsWindowed.exe. Run Zakum to 3rd body and experience disconnect.

Extra information (optional): This has happened to me before and after the 22/1/2018 patch and before and after reinstalling a clean client. Other programs open at the time were Discord only.

 

Yes, I updated to the latest driver the other day. So this happened before and after latest drivers.

 

Will try that next time.

I actually tried doing that the first time it happened and that caused the runtime-error as soon as I tried opening the system options panel. None of the panels were visible either.

 

I think you can flag this as resolved now. Poof suggested I check the client's Windows Compatibility setting and sure enough, it was set to run compatible with Windows 98 for some reason. I have no idea how that happened, but unchecking that box fixed all my problems. Haven't encountered the bug since.