Steps to reproduce:

1. Go to demo, open a travel/about/Company
2. Edit the Text&Image component and include some data at the Image tab (e.g, Image title, Caption...)
3. Without closing the dialog, copy the URL to open the dam app (https://demo.magnolia-cms.com/.magnolia/admincentral#app:dam)
4. Close the Assets app (using the X icon) and notice you will be redirected to the opened dialog we were on step 3
5. Save the dialog (Save changes)
6. Go to JCR app, open the /travel/about/Company and check that the fields you fulfilled on the step 2 have been stored in: root page level instead of in the Text&Image, if you open the dialog again it is empty

Dev notes:

Please, check the attached video.