1. Choose a host and go into the properties.
2. Add comments under "Additional properties".
3. click on the "View" tab, change to "Detail" (Which is my preferred view)
4. Right-click and un-check "Ping"
Your comments disappear.
I figured out the problem is simply the screen is not updating after the columns shift. If you now click "LARGE ICONS" or any other view under the VIEW tab and then click DETAILS again, it refreshes the screen and the columns line up properly.