What if PDF Notes app doesn't appear in the Share or AirDrop list?

After updating to iOS 13 and iPadOS 13, a few customers have reported that PDF Notes app does not appear in the Share or AirDrop list.

I've tested it and found this problem occurs in the devices in which many PDF related apps are installed, and this is similar to displaying up to 10 apps in the oldest order in the Open-In menu in iOS 5 and earlier.

In other words, in iOS 13, when displaying apps that can process PDFs in the Share or AirDrop list, it is assumed that iOS 13 displays apps in a limited amount of old order.

As a result, newer versions of PDF Notes apps, such as those updates for iOS 13, will not appear in the list. i.e., if pdf-notes has been updated recently, pdf-notes may disappear from the list.

This problem needs to be fixed by Apple, but it can be resolved in the same way as before iOS 5.

By deleting lower priority apps that you don't use often, if you can keep the number of PDF related apps installed on your devices less than or equal to the (unknown) limited number, all PDF apps will appear in the Share or AirDrop list.

I hope this may help you.

We look forward to Apple fixing this bug as soon as possible.

Thank you.