Comment 6 for bug 1873628

I think the lag is either from loading all the fonts, or building the previews for the text menu (or both!)

I set up a clean Ubuntu 20.04 and unfortuantely couldn't reproduce the complete hang with the default Pinta version (1.6), before or after installing the mscorefonts.
Are there any other differences in our setups that you can think of (e.g. maybe you're using a different language / localization, or have other additional fonts installed?)