I just noticed this happening in the last few months. I'm running Build 13.025.
I can write comments after every match, but when the card finishes the comments aren't there. In the Comments box (in Circuit Menu > Advanced Options: TweakCircuit SE > Comments), I have checked "Enter Comments for Every Match" and "Disable Comments at End of Card," and unchecked "Disable Comments in Card Results." So the comments should show up. I checked the "Disable Comments in Card" and it did disable comments in cards where I had comments before. But unchecking the box did not show comments from my most recent cards.
Anyone else having this problem and know of a solution?