Symptoms

When editing a form, and then in the search bar in K2 designer, a name of a view is searched, it is not possible to drag the view from the result set of the search into the form.
 

Diagnoses

For example:
1) Go to K2 Designer and create a view and a form (named View1 and Form1
2) Checkout and edit Form1
3) Search for View1 in the search bar in K2 Designer (upper left corner) and attempt to drag it over to the Form1 in the layout. None of the position markers in the form show in order to drop the view, nor does it allow for View1 to be added

However, you are able to browse in your category structure for a view to add, and pull it over to the form without a problem.
 

Resolution

This is a bug in 4.6.11. This item is scheduled to be fixed in K2 smartforms 4.6.12. The following bug item is logged for the behavior:

Bug 588735: 5K2 SmartForms]: Using Search box in the designer you can not drop a view on a K2 SmartForm you need to manually find the view and drag it on the Form