Anjuta crashes when creating a window in the UI editor

[William Hua]

Run anjuta, create a new UI file. Clicking on the window toolbar button causes the following crash:

(anjuta:1635): Gdk-WARNING **: /build/gtk+3.0-C8PvPE/gtk+3.0-3.22.11/./gdk/x11/gdkwindow-x11.c:5573 drawable is not a native X11 window

(anjuta:1635): Gdk-ERROR **: The program 'anjuta' received an X Window System error.
This probably reflects a bug in the program.
The error was 'BadWindow (invalid Window parameter)'.
  (Details: serial 16619 error_code 3 request_code 20 (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.)
Trace/breakpoint trap (core dumped)