Inconsistent metadata

[pettobia]

Version
3.19

Describe the bug
At the upload dialog, there is a field "Thema" (standard value: "Medienupload, Stud.IP").
After uploading, when you open the edit dialog, this field is empty.
Also, when you go to the admin interface of Opencast, you can see that the values are stored, but the field`s name there is "Betreff" instead of "Thema".

Expected behavior
Load the field`s value at the edit dialog and have a consistent name for the field.

Screenshots

[pettobia]

#pleasereopen The field`s current value is still not shown at the edit dialog