Ligatures and Windows 10 - issue solved

If you are having problems getting ligatures to work for using glyph fonts like Font Awesome 6, try installing Micorosoft PowerToys (free app from microsoft). This fixed the issue for me. This app will also allow to to see SVG files in the preview pane.

delete this topic please. This turned out not to be the solution; the problem was user error and font variations.