[Task Builder] Edit / Autocomplete Media Item

[sauterl]

Currently, when editing the text field for media items (target or hint), the autocomplete does not catch up and thus the task looks valid, however the saving of the competition does not succeed.

[lucaro]

Maybe something like this will help: https://onthecode.co.uk/force-selection-angular-material-autocomplete/
There is apparently not currently an option to do this natively in angular, even though people have been asking for it for years, see this issue where there are also some alternative suggestions: angular/components#3334