This is more a general bug report about ingress scanner behavior. Since some days actions like set/upgrade a resonator, recharge, deploy mod etc lead to up to minute long blockade of the scanner.
This will be fun to play an anomaly at the weekend :)
This is the ever ongoing lag issue. But they closed the ticket on it and have never actually given us any sort of fix. It's only been ongoing for 3+ years now. [sarcasm]I'm sure it will be fixed soon! [/sarcasm]