Observed this with DAM.
1. Open thumbnail view
2. Select image asset and observe what actions are shown in Actionbar
3. Select another image asset and again actions should be identical
4. Select document and observe that actions are now different in Actionbar
5. Select same image than in step 2 and observe that actions are identical to step 4.

This does not seem to be correct. Actions available in Actionbar should be dependent on selected item only. Now there seems to be something indeterministic.