Good question… I’m sure someone more technical will help you on that one! Thanks for trying threads!
nostr:npub1xtscya34g58tk0z605fvr788k263gsu6cy9x0mhnm87echrgufzsevkk5s nostr:npub1h50pnxqw9jg7dhr906fvy4mze2yzawf895jhnc3p7qmljdugm6gsrurqev nostr:npub1zafcms4xya5ap9zr7xxr0jlrtrattwlesytn2s42030lzu0dwlzqpd26k5 I like the thread UI. What’s the black dot ⚫️ on my comment? 
Discussion
Looks like an activity badge but it’s empty for some reason…
Opening a ticket for it!
Opened https://github.com/damus-io/damus/issues/2300
We will investigate! 👨🔬