What were you trying to do that didn't work?

A call to set application urgency via XSetWMHints(), does not result in the expected behavior of the application in the task bar activating the color pulsing indicating urgency. Note nothing happens on the taskbar.

See attached screenshot and code

What is the impact of this issue to you?

Describe the impact to you or the business
The air traffic control has no means of identifying which window requires their immediate action since the task bar no longer indicates which window action is required.

Please provide the package NVR for which the bug is seen:

mutter-3.32.2-72.el8

How reproducible is this bug?:

always

Steps to reproduce

1. compile attached urgency_example.cpp

Expected results

See Screenshot.png

Actual results

urgency_example.gif