So basically, this happens on the cosmic client for me. I play on mac and I play on cosmic test servers/cosmic. The old cosmic client that is meant for test servers has been crashing for me and I don't know how to fix it. shows a representation of what is happening to me. If anyone has ideas on a fix please leave a comment.
VM Regions Near 0x10b122000:
__LINKEDIT 000000010b10f000-000000010b122000 [ 76K] r--/rwx SM=COW /Library/Internet Plug-Ins/JavaAppletPlugin.plugin/Contents/Home/lib/libjava.dylib
--> VM_ALLOCATE 000000010b122000-000000010b123000 [ 4K] r--/rwx SM=PRV
shared memory 000000010b123000-000000010b124000 [ 4K] r--/r-- SM=SHM
Application Specific Information:
*** Terminating app due to uncaught exception 'NSInternalInconsistencyException', reason: 'NSWindow drag regions should only be invalidated on the Main Thread!'
terminating with uncaught exception of type NSException