In the old context menu, if you hovered over a tag in the menu, a balloon message identified the type of tag. For example, if you hovered over the the lemma, it said "lemma". The new context menu lacks this function.
I realize that if you select the tag, the top of the right column says what it is ("manuscript", "lemma", "root"). But when a person is selecting from the various options, I like the old behavior which gave reminder when you hover over it. I don't believe that the icons are clear enough in meaning on their own.
You'll find a discussion here. I don't know whether that functionality will return or not.