Repaint and resize issues after changing the window scaling factor

Steps to reproduce this issue:

1. xfconf-query -c xsettings -p /Gdk/WindowScalingFactor -s 2
2. xfce4-panel -r
3. xfconf-query -c xsettings -p /Gdk/WindowScalingFactor -s 1

Panel screenshot, after execution of step 3:

Current workaround for this issue:

4. Run xfce4-panel -r

The xfconf-query command is from https://mail.xfce.org/pipermail/xfce/2021-November/037425.html