android keyboard selecton /// android bottom keys disappear

(Issue title)

Summary

In a certain submenu of the setting menu the android bottom keys disappear (are not visible anymore)

Steps to reproduce

Settings / System / Languages & Input / On-Screen Keyboard. Then select "Android Keyboard (AOSP)" and the bottom Android keys disappear.

What is the current behavior?

Behaviour remains unchanged. Even when I click on the spot where the BACK button should be, I can go back one step.

What is the expected correct behavior?

Visibility of the three Android keys.

Relevant logs and/or screenshots

Screenshot:

Possible fixes

Dunno