Hit ENTER after each Tag to add it to your post; Numbers in parentheses represent the Tag's usage.
I mentioned this in another post, but it might have gotten lost.
In IE11 with SmarterMail 16.0.6362, when you add/edit a contact and click Save, this pops up:
"Are you sure you want to leave this page?"
Message from webpage: null
Doesn't happen in SM15.