ID:2413377
 
Resolved
Using shift+drag or ctrl+drag to swap or copy multiple selections could fail in some cases.
BYOND Version:512.1456
Operating System:N/A
Web Browser:N/A
Applies to:Dream Maker
Status: Resolved (512.1457)

This issue has been resolved.
New bug by trying to drag a frame with the scroll button (pressing it on the frame and dragging it to the frame counter). It doesn't happen all the time, but it surely does happen. I get hangs all the time when trying to replicate this bug.

Print: http://prntscr.com/lnbb5h
Lummox JR resolved issue with message:
Using shift+drag or ctrl+drag to swap or copy multiple selections could fail in some cases.
Interestingly this issue only showed up in release mode. I have yet to determine why.