gkrellm crashing with transparent theme on Fedora29

Ever since upgrading to Fedora 29, gkrellm crashes immediate when
started if I try to use the Glass or Glass-2 themes:

$ gkrellm

(gkrellm:10499): Gdk-ERROR **: 07:30:55.720: The program 'gkrellm'
received an X Window System error.
This probably reflects a bug in the program.
The error was 'BadPixmap (invalid Pixmap parameter)'.
  (Details: serial 3463 error_code 4 request_code 56 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.)
Trace/breakpoint trap (core dumped)


Anyone have any ideas?