I was at my local Wetherspoons this afternoon, I paid using my Monzo card (chip and pin) but didn’t get any notification that I’d spent not any badge icon, but transaction is showing in the app.
The same thing happened in Aldi yesterday, no notification or badge icon and I was on a good 4g network with signal, but transaction showed in the app. This was a contactless payment.
This is on iPhone 5s with iOS 10.1. I was on their WiFi at the time. Not a huge issue for me, but thought I’d let you know in case it was the start of an issue.