Yes. They are counted and the count is displayed, they are shown in the river but they are never shown with the associated post, no matter how they are viewed. The other post in my screenshot is a bookmark and you can see it's not displayed there, either. I will try disabling the theme, hype stuff and then make a new post and attempt some comments on it.
Turns out it's hypeInteractions that's hiding the comments. Doesn't matter which theme (or no theme) is used.
And on closer look, there's no version of hypeInteractions that will work with 2.3.
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