iOS app missing keyboard language selection
If I understand correctly, you are saying the keyboard languages show up properly in all Apps except a few. Is this right? Are you connected to the internet when the problem occurs? I ask because some language items (e.g., voice dictation) only work properly when an internet connection is available (sometimes you can't even see the mic, shown in your image). Like you, I have 4 languages installed (although I removed emojis). At times I've experienced problems (though different from yours) and I did something like the following to solve them:

1) remove each keyboard language (except native) via settings--&gt;general--&gt;keyboards
2) restarted the device
3) re-added each keyboard language via settings--&gt;general--&gt;keyboards


In your case, I suggest you delete the problem App(s) before step (3) and then re-add them after step (3)

If you are able to see the language keyboards in most Apps (Mail, Notes, etc...) but just not in some problem Apps, I would contact the developer, sending them a screenshot.