In polish texts, some polish letters are displayed for me in a different font than desirable museo sans. I'm not sure if it's my computer and if the page is serving any fonts to the user but I believe it should avoid this kind of situations. Screnshoot: 
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hagenburger commentedon Aug 4, 2020
Oh, that shouldn’t be. Thanks for reporting!
peterpoliwoda commentedon Apr 5, 2023
+1
Please use a different font for Polish if there's no letters with ogonki 🙂