Prepare the environment:

1. Create new dashboard
2. Create new widgets who occupy all view port.
3. Add new widget to new row.
4. Save.

Steps to reproduce:

1. Click button "Edit dashboard".
2. Delete last widget
3. Observe: dashboard resized.

1. Exit from dashboard edit mode and click edit on last widget.
2. Close dialog.
3. Click on widget delete icon.
4. Observe: dashboard not resized.