To recap - using Damus, clicked on your avatar which invokes the popover and tapped on the Zap icon which invokes my chosen wallet, Wallet of Satoshi. I then transact via Wallet of Satoshi which confirms the payment has gone through and swipe away the Satoshi app to return to Damus. The Zap icon is currently in standby mode, showing a spinner and nothing else happens until I swipe away the profile popover to clear it. Definitely no notifications of any kind. Was curious to see if I zapped myself which didn’t happen. 

I’m a developer and always keen to help people test their apps and help them resolve bugs.