I noticed one thing the tag names in gtk.css installed on using Linux mint flathub gnucash is different than https://github.com/Gnucash/gnucash/blob/maint/doc/gtk-3.0.css Flathub version does not work with the Git windows version Used Beyond compare on the 2 css files -- Sent from: http://gnucash.1415818.n4.nabble.com/GnuCash-User-f1415819.html