Selecting value for raw_id_field in InlineAdmin doesn't work when using Modals

[PavelPancocha]

Hi there!

We ran into issue, when you have inline-admin with raw_id_fields and modals enabled:

When you add a new row, click to find FK(Supervisor in this case), you cannot select it. If the row is not new, it works as expected.

How to reproduce this bug:

• Modals: Enabled
• Two models, with FK
• Use inline admin with raw_id field
• Add new instance of the model and go to choose the value from the raw_id field
• It cannot be done

You can see it also on this video.

How to reproduce it yourself? Clone my repo, install django-jazzmin (from requirements) and you are ready to test it!