It's horrible how it lists every single variant/style of every single font in huge text that doesn't even follow the size control at the bottom.
I guess you see [this](https://www.google.ca/search?q=GtkFontSelectionDialog&rlz=1C1CHBD_enCA80...). I'm a bit luckier, as on my installation of Geany in Windows 7, I get [that](https://www.google.ca/search?q=GtkFontChooserDialog&rlz=1C1CHBD_enCA809C...), so it at least keeps the sub-variants of every family in a separate box. My guess is, that's because in my installation: `15:54:44: Geany INFO : GTK 2.24.32, GLib 2.54.3` , and so my Geany uses [GtkFontSelectionDialog](https://developer.gnome.org/gtk3/stable/GtkFontSelectionDialog.html), which is said to be "deprecated", while your Geany uses newer Gtk with [GtkFontChooserDialog](https://developer.gnome.org/gtk3/stable/GtkFontChooserDialog.html). So maybe Geany should stick to GtkFontSelectionDialog ? Just saying...