When viewing a diff of a change of the grammatical feature of a Form the label for the item is not shown and instead only the Q-ID.

The label should be shown in the user's ULS language (or a fallback when not available - same fallback chain as everywhere else for item labels).

example diff:

Example diff with item labels shown:

The same diff in qqx language with fallback:

To be done after T189187.
The solution seem to be to use the correct item ID formatter in the code visualizing the grammatical feature differences in the lexeme diff. The formatter will be recognized on the course of T189187.