For some reason, when we add tags to a post, WP doesn't save them. Sometimes if you only add one, it'll save it, but if you add more than one they all get removed. I recently installed the "List Tags" plugin so I could list the tags for each post, and it was working fine for about two weeks, and then this started happening. Any thoughts on what's causing this or how to go about fixing/troubleshooting? Thanks in advance!