Recently I started noticing that a lot of posts will mark as read for a second then go back to unread when viewing just the image or article. It’s not all posts though and I haven’t determined a pattern yet, but opening the comments seems to mark as read on refresh even though the post looks unread before refreshing.
I’m on version 122 of Sync on Android.
I actually just noticed the same thing. Click into post and going back out, post shows as unread. I found refreshing while in the post and then going back, it does show as read.
Also v122