I upgraded to 3.2 this afternoon, and found the post tags disabled. I cannot add any new or old tags to the post. I clicked "Choose from used tags", nothing happens; I typed new or old tags in the input textbox, still, nothing happens!
I deactivated all plug-ins, this problem is still unfixed. I then re-activate the plug-ins one by one, I found one plug-in has compatibility issue with WordPress 3.2, but this could not be the reason, since I deactivated it but the problem is still there.
Anyone has the similar problem? How to fix it? Thanks!