Problem with Book Collection Selection in Layouts Window

I created an App with three book collections. The first book collection is with text and images in language 1. The third book collection just with the text in language 1.
In the Two Pane Layout, I want to display only the texts of languages 1 and 2.
This worked fine with Scripture App Builder 6.1. But with the newer versions, it seems to ignore the selected collections to display and just always displays my first book collection in the Top Panel of the Two Pane Layout.

I save the settings in the following screen shot and close SAB

After reopening Top book collection in the Two Pane Layout is displaying again the first collection, not the third one.
I’m currently using SAB 7.0.3.

I checked the appDef File and there the correct collections are saved. But the problem is also present in the App I build.

Any ideas how I could fix this problem?

Yes that is not what you would expect.

I have been able to test this and while I don’t get the exact same behavior, I do get items different to what I chose in the app builder.

I have written this up