I have managed to copy ttf font files to the correct folder in my flatpak installation of LibreOffice on Linux Mint. Many of them show up in Writer when I select some text in a document and select the font drop-down. Sure I go to change the highlighted text … but nothing happens except that the text is still Roman English but perhaps smaller or in italics or something.
It certainly isn’t in a Hebrew or Greek or some other unusual (but ‘installed’) font.
Why won’t it show in the selected font ??