I can't hover over the spot next to the tags for an "edit tags" button anymore:
This used to work before the graduation, but now I have to click on edit and I am too lazy for that.
This isn't a bug. Since the reputation threshold changed, "Inline editing" requires 10k rep.
You'll be there soon :p
One of the downsides of losing privileges: you, well, lose privileges :)
If I remember correctly, you'll get it back at 10K - just keep doing what you're doing and, in 6-8 weeks it'll fix itself!