Channel Manager: Item properties - Clicking on cancel should close the channel properties dialog and de-select the item in container

1. Login to CMS as admin user
2. Navigate to Channel manager >> Select a channel >> click on edit >> select an item in container
3. Item properties dialog should show with properties in them
4. Add or remove (edit) properties of the item
5. Click on Cancel button

Expected - Above properties changes should not effect, item properties dialog should close and de-select the item from the container
Actual - Above property changes disappear and do not effect.