If I enter the menu "Applications" a hover with amouse over a certain line, the line should get "selected" and the background color to change, showing where am I at the moment with my mouse. Somehow, this doe snot work fom most of the available styles.
3 Styles available under Applications->Settings->Appearance work:
Adwaita - works
Adwaita-dark - works
High Contrast - works
All remaining ones do not:
Raleigh - selected row is not highlighted
Xfce* - selected row is not highlighted
I think I used to have the default Xfce* (whichever) style with previous xfce releases and at some point (around 4.13?) upgrade it broke.
I initially reported it at https://bugs.gentoo.org/632652 .
That's a gtk theme issue, nothing to do with the window manager.
But those are not maintained anymore as far as I know, I can even find the git repo so closing as wontfix.