Well I can see tags from all the files I had tagged before I installed Mavericks - and they are on an external server - but if I try and make a new tag, the coloured button shows up for a few seconds then disappears but if I change the view to 'tags' it shows the new tagged file as tagged.
When I tag a file on an external drive or on my Mac however, it stays visible.
Not sure how Apple can make something that is simple and works easily into something that is complicated and doesn't work.
Is anyone from Apple listening to this?