I’m not sure if I’ve mistakenly pressed a wrong key combination but somehow I’m not able to highlight glyphs in the glyph design window anymore. I can still use Shift + right/left arrow to select glyphs though. Maybe someone’s got an idea? Thanks a lot!
I don’t think you were ever able to select with a drag of the mouse actually.
Besides shift-arrowing, you can also click at the beginning and shift-click at the end of the desired selection.