So, highlighting a word and selecting fill-in, it underlines the word but when I make it a slide, it no longer creates the 2 slides, it only creates the one that is filled in. This is after updating to 39.1.6 on a Mac (M1 Pro)
Assuming you are referring to doing this in Proclaim, I've just tested this on my MacBook and it worked fine.
Please provide more details including screenshots.
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