The attached test fails with message:
X Error of failed request: BadWindow (invalid Window parameter)
Major opcode of failed request: 20 (X_GetProperty)
Resource id in failed request: 0x4000011
Serial number of failed request: 2485
Current serial number in output stream: 2485
java version "1.7.0-ea"
Java(TM) SE Runtime Environment (build 1.7.0-ea-b60)
Java HotSpot(TM) Server VM (build 16.0-b03, mixed mode)
There severeal attempts could be needed to reproduce it.
(This was added to allow vmsqe-scripts to find out this test.)