Oops, my bad, should have added that information, of course. I am using InDesign 17.4.2 (in this case) on OS X 15.3. Changing the font and changing it back doesn't work. The font is installed in the system: I don't use any font managers (anymore). The font was bought around 7 years ago by my company: I don't know where they got it from... I will try siging out and clearing the cache and report back! EDIT BTW In addition: when I copy the 'faulty text' into a brand new document it remains pink. However, when I create a new document, type something in the problematic font (and all goes well) and then paste the faulty text in the new document, it's alright! It's also the other way around: if I create a new document and first paste the faulty text in it and then type something with that font into a new frame it's also pink. Really odd. If I copy the 'corrected' text from the new doc into the old one it becomes pink again... It's so strange...
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