Qt 4.8.4 applications crash on startup with:ASSERT: "uint(i) < uint(size())" in file ../../include/QtCore/../../src/corelib/tools/qstring.h, line 677
I had this crash for many Xpra versions, but looked into it a bit further now. It is related to Qt getting window properties by calling
XGetWindowProperty. The properties have an additional '\n', which causes the crash. I guess Qt is at fault here, but I can't update Qt for these apps and fixed it by removing the additional new line from xpra's server.py.
Well, that's a major problem, I can't believe no one has reported until now.
this ticket has been moved to: https://github.com/Xpra-org/xpra/issues/571