After the release of the last iOS update, some users have reported that they were having some issues with multitasking. According to the users, Apple chose to close apps in the background much quicker.
Some users reported that Apple would close the background app even when they only did a simple jump in between app. After the bug was reported, Apple has been working on fixing it and they now have the fix ready with the iOS 13.2.2 update.
The update will also address the issue where the Apple iPhone would lose the mobile signal after a call. The issue where the charging would be interrupted on YubiKey lightning-powered accessories will also be fixed as well.
The update is already available right now.