The problem was initially reported against swt (https://bugs.eclipse.org/bugs/show_bug.cgi?id=110163)

to reproduce the problem you need to compile/run attached program.
and you will get the following error:

The program 'SWT' received an X Window System error.
This probably reflects a bug in the program.
The error was 'BadMatch (invalid parameter attributes)'.
  (Details: serial 344 error_code 8 request_code 42 minor_code 0)
  (Note to programmers: normally, X errors are reported asynchronously;
   that is, you will receive the error a while after causing it.
   To debug your program, run it with the --sync command line
   option to change this behavior. You can then get a meaningful
   backtrace from your debugger if you break on the gdk_x_error() function.)