Hi @Robbie34135385e7mh,
Are you still running into this issue? Stan is right, adding screenshots that show the Properties panel and what the captions currently look like vs. what they are supposed to look like could help us understand the issue better.
Is it possible you are working in a sequence that is a different size or resolution than what you have worked with in the past? What parameters are you trying to change the size of (font size, fill, stroke, background, etc)? These are on a capt
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