Comment 22 for bug 1845362

I had the same problem while testing the Live Session in Ubuntu Desktop (Legacy) amd64 in Focal 20.04.6 using a Lenovo ThinkPad X201 (64Bit Intel Core i7-M 620 @2.67GHzx4; 4GB RAM; Intel HD Graphics; 1xSSD-160GB)

Error Message:
gnome-font-view: The program 'gnome-font-viewer' 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 1658 error_code 9 request_code 139 (RENDER) minor_code 4)
  (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