Alt/description/title shows up in dev version but doesn't save value

I noticed that when using the dev version the alt/description/title fields show up after uploading a zip file.
The fields are also filled in with the default value.

But when I upload a zip file and edit the text in the alt/description/title field this new value is not saved.
It uses the default value again, or if not set an empty value.

When I edit the node after saving and enter the values the fields are saved.