L1550807597030 , via OnePlus 7 , Oct 28, 2019 : Hi All, I have observed below issues post 10 update. 1. System lag issue 2. On notification bar unable to see any notification. However you can it when you scroll down 3. Unable to see WhatsApp call until you open WhatsApp & click on ongoing call which is in minimized state. 4. Did not see option Google photos to use mobile data in backup section. 5. Speed dial adding frequent calls in the list which didn't not happen in OS 9 There could be more, I'll update once I observe. I am expecting a resolution from OP team in next update.