Steps to reproduce:
1. Add a Nested Portlets portlet to a page
2. On the right-hand side panel, add a Basic Web Content
3. Move the created content (along with the WCD portlet it is displayed in) into the Nested Portlets portlet
4. Observe that you can move portlets around
5. Emulate a touchscreen laptop as shown in the DNAPORTAL-48(1).mp4 video (this is crucial!)
6. Try to move the portlets around again
Result: The portlets can no longer be rearranged.