Having installed latest version (4.5.3) on Windows 7 Home Premium, the fonts list is only displaying in plain text. Is this a bug that needs fixing or is there something I can do to correct this?
It works for me in macOS. (would inline a screenshot if I could. Name on left; styllized on right if the glyphs are a different language.)
If you can share a screenshot would be helpful to help you out.
Common: Choose menu Tools - Options - LibreOffice - View, and check the box left to Show preview of fonts.
Writer: To see the preview in Styles, press F11 and check the box left to Show Previews.
LibreOffice 6.3.6.2 (x86); OS: Windows 6.1