Weird, that shouldn’t happen on plasma with Qt6 apps and recent chrome/electron thanks to ext-cursor-shape
My workaround personal workaround is this for plasma 5 is :
flatpak override -u --env=XCURSOR_PATH=/run/host/share/icons:/run/host/user-share/icons
Deepin lxQt MATE? Plasma GNOME Cinnamon? Unity XFCE Budgie?
Not sure for the third column