Steps to reproduce 

Kazam_screencast_00002.mp4

Expected results

The asset link is stored in the edited component.

Actual results

The asset link is stored in the edited page.

Workaround

Seems random (timing issue) or requires exact steps?

Development notes

The manual observation triggered after upload refreshes the underlying page as well.

Looks like the asset datasource observation is not defined in the module descriptor so the page editor observation is injected instead (Thus shared in both page/asset datasource!).

As the page editor observation does a computation of selecting a proper page element, this might cause this issue.