Oh man... I can relate 🙂 After reinstalling Windows, the same issue occurred in all of my documents. Sure, changing the first baseline to "Cap Height" in all of the text frames fixes the problem (and you can do that easily in Find/Change > Object window), but with hundred of documents that would take an absurd amount of time. After searching for the solution, this blog post gave me an idea: https://indesignsecrets.com/understanding-the-first-baseline-position-of-text.php This sentence to be exact: "<setting the first baseline offset to Ascent> ensures that the top of a lowercase letter fits inside the frame. Exactly how far below the top of the frame varies, depending on the font you’re using. Some will be dead on. Others, not so much." The solution (in my case) turned out to be the font, I had installed some different version of the font I've used previously (Roboto) and these two versions were different when it came to the "first baseline" value. After finding the most recent font and reinstalling it, all the files behaved as expected. Hope it helps someone, cheers.
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