IPhone users complain of a bug of the App store. In the Internet there are more opinions about what users have to update certain individual applications five times. Each new update at first glance is successful, but a second later the App Store asks users to re-update.
Nasty bug manifests itself App Store on iPhone and iPad running various versions iOS 12. In each of the observed cases the problem is identical. Individual apps cannot be updated the first time they have to update several times.
It is noteworthy that the problem is not all apps. Usually only one or two apps are not updated from the first time. All other updates are as usual.
What is the problem at the moment is unknown. Also even a temporary workaround has not been found yet. It is possible that the problem is related to the recent disruptions in the App Storethat Apple has managed to eliminate.