iOS Update causes iCloud Photo Library issues I just updated my iPhone 7 to iOS 11.4 and this seems to cause some issues to my Photos.app library. I'm using iCloud Photo library and right now when I checked the amount of Photos in the "Albums" view of Photos.app on iOS the amount of pictures is way lower.

Also some old pictures are suddenly showing up mixed in with the last photos I took a few hours ago.

When I check "Photos" it tells me "Uploading 7.xxx Items" at the bottom.

Does anyone have a clue what's going on there and how to fix it?
So I talked to the Apple Support and their solution was to...wait. So I waited until everything was uploaded again. This took around 12h. Then it started downloading files again, then it switched to "Updating" and then everything was fine again.

The person on the hotline said that it has to "upload" (It actually just checks if it's already on the server, not actually uploads the file) the file. Then it downloads what's missing and fills up the missing ones.