Mobile devices do not show app version or short app version

I mostly see this with apps that update often or are set to auto update.

I do see this on newly enrolled devices and also those that have been enrolled in 2 years or more.

Inventory shows the app name, but the app version or app short version is blank.

Numerous inventory update or restart commands issued.
I see this on my production network as well as away/unmanaged networks.

Support had me initate update inventory command, and I see this fixes issues for some devices but not all.
Ideas?