My application dies with:
X Error of failed request: BadWindow (invalid Window parameter)
Major opcode of failed request: 2 (X_ChangeWindowAttributes)
Resource id in failed request: 0x640000a
Serial number of failed request: 1434
Current serial number in output stream: 1440
On exit as well
I really cant create minimal code from this, but I use rendertextures and shaders together a lot ("chainlinked" shaders on rendertextures for blur etc)
This didnt happen with 1display-branch