Steps to reproduce:

1. Open attached project
2. Open scene "Scene"
3. Select "Cube" and in its inspector, click custom "Demonstrate bug by clicking this" button for a few times
4. In Project tab, notice that on each click, an asset without icon is created.
5. Click on one of them and notice that all are selected

Note: Reopening project fixes this issue, but didInsert error is returned for each broken asset which was created during last session.

Workaround: Check if there is no asset under the path which is used to create a copy of an asset.