Ardour displays bold font as squares
hello I've installed Ardour 5.5 on Fedora 25; when I start Ardour some parts of the interface aren't readable and are displayed with empty square characters instead; It looks like it's related to the bold letters only.. see screenshot for what i mean please:
any idea of what this could be?
I use apples san francisco font as my system font, but while using lots of other software i nowhere see this issue besides Ardour. (if i'm correct i didn't have this problem with ardour and the same system font a few months ago)
thanks for your input.