I have just had similar quirkiness, not identical though.

I would look here: Right click in the two chevrons >> next to "Big Piano" icon which shows a tiny keyboard. Select "Fake sheet mode". I think this is a kind of real book mode which presumably, economises on ink with repeats. There should be an unamed menu pop up. Uncheck " display chord sheet in fake sheet mode with first and second endings". When unchecked, the repeated bars, appear in grey, just where you would of had them if you wrote the repeats out. Here you might find your issue. I found anomolies on my repeat section that I had not entered.

Z


Win 11 64, Asus Rog Strix z390 mobo, 64 gig RAM, 8700k