Minor tag display bug in Messages window

If I select a single message and add a tag to it, I see the tag in the header display. If I select multiple messages and tag them all, the displayed message does not get updated.

Actually, this seems to happen even when just selecting multiple messages: the headers of the displayed message does not show tags. I will attach two screen grabs.

This obviously isn't a high priority bug, but I thought I should bring it to your attention.

Best,
r