I updated to the latest version being on beta channel and some comments in threads look like having 125% size of letters compared to others. Idk if that's some option in settings (I've not found one) and I don't see some systematic rule of why it happens.
edit: added screenshot, first comment is of different size to the next one, changing font size settings keeps the difference
Maybe the dev might have further questions but yeah I'm not sure what it could be in this case.
I suppose there are some OS-typical settings for basic things and the way MIUI manages them stirs the Connect's dev wrong, this app doesn't get right info or have a wprkarpund to work with it. Idk.