most apps not working after updating to iOS 12

iOS & iPadOS

Hello, Sorry for late bringing this issue, but after I update my iPhone 7 to iOS 12 last September most of my apps not working as expected. For example in appstore I supposed to update all my available apps but it's stop working, it happens every apps I open like overcast, IFTTT, apple Store and so on. What I do is bringing the appSwitcher then close that app and run again it will work again as ok. It occur everyday after this iOS 12, I expect this bug solve after updating to iOS 12.1 but found no luck. Anyone experiencing same issue? if so how do you solve it?