Wallpaper doesn't change after closing lid

Issue Description

Wallpaper in current workspace doesn't change after closing laptop lid for a bit and reopening it. "Next background" command doesn't make a difference either. Switching to a different workspace however allows the wallpaper to be updated.

Steps to Reproduce Issue

Close laptop lid for about 20 seconds; open it again.

Expected Behavior

Wallpaper should update when "Next background" is clicked.

Additional Information

First mentioned in !172 (merged).

Enabling settings: Stretched style, Random mode, Apply to all workspaces, Solid color, 20 minutes timeout

Wallpaper folder is not the default /usr/share/backgrounds/xfce.

When laptop is closed setting: Switch off display

Environment & Versions

• OS distribution and version: Gentoo
• Overall Xfce version: 4.19.6
• xfdesktop version (git hash if not a release): 4f9b3162
• Windowing system (X11/Wayland): X11
• GTK Theme: Adwaita
• Icon Theme: Human
• UI Scale Factor: If this is about "Scale" setting in the Display dialog, it's 1.00.