Apparently Lemmy supports up to 99 nested comments. But Sync doesn't display more than 23 in portrait view or 46 in landscape view (on my OnePlus 5t at least). With an increasing number of comments the area where the actual comment is displayed decreases. At some point you can see nothing but the lines separating comments:
Is there a way to collapse this stack of comments or whatever to display all comments as supported by Lemmy?
I don't think anyone is asking for this. You seem to be the only one talking about priority. It seems to me that OP would like the dev to look into something.