This started happening, when I added the [telegram plugin](https://github.com/majn/telegram-purple) to my Pidgin instant-messenger. Now, when flip through the messenger's tabs, the entire window manager sometimes crashes: ``` (xfwm4:55741): Gdk-ERROR **: 11:36:18.825: The program 'xfwm4' received an X Window System error. This probably reflects a bug in the program. The error was 'BadDrawable (invalid Pixmap or Window parameter)'. (Details: serial 76283839 error_code 9 request_code 14 (core protocol) 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 GDK_SYNCHRONIZE environment variable to change this behavior. You can then get a meaningful backtrace from your debugger if you break on the gdk_x_error() function.) ``` Thоugh the WM is automatically restarted, certain clients (like `wfica`) remain messed up and need to be restarted too. Unfortunately, the debugging advice above seems stale: ``` (gdb) b gdk_x_error Function "gdk_x_error" not defined. ```