The API updated with Lemmy 0.19.4. The old way has been marked for deletion and they've now followed through on that, but a few apps (presumably including Sync) haven't updated to the new way yet

https://lemm.ee/comment/12479585

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

Happens to me too, vrry frustrating

If I read comments then tap the Android back button, the post looks read and it stays that way through refreshes, so I don't seem to be affected. I'm on Lemmy.world, though.

Sync is full of dumb bugs and the markdown uses reddit style for everything still. A fucking year later. I wish apps like Thunder would catch up in the quality-of-life features so I can abandon Sync entirely. It's a cobbled together port of Sync for Reddit and was never given the focus it needs, especially for the price he asks for it.

I'm on version 122 of Sync on Android.

Where are you getting that number? If I press the bug icon when editing a comment, this is what I see. (Some stuff omitted)

Device information

Sync version: v24.03.26-14:56    
Sync flavor: googlePlay    

View type: Compact    
Push enabled: false    

Android: 14

Yup -- and the developer is known for going silent for weeks/months at a time.

Anyone who spent money on this app is a sucker.

Edit: lol downvoted but at the moment he was last active a month ago. This is not the first time basic functionality has broken and he's ghosted the app.

He's charging over $100 for premium, and won't even stay on top of changes that break basic functionality.