Xfdesktop sometimes doesn't show cursor busy icon when a user opens applications

The busy cursor is displayed correctly, if you hover another window (ex. plank, conky, or application's splash screen).

The restart resolves the issue.

demo

This is xfdesktop version 4.16.0, running on Xfce 4.16.
Built with GTK+ 3.24.20, linked with GTK+ 3.24.20.
Build options:
    Desktop Menu:        enabled
    Desktop Icons:       enabled
    Desktop File Icons:  enabled