I wish I could remember if this started when I upgraded to 2.8 or when I upgraded a specific plug in! I'm hoping someone else has had this happen and can help me out.
Since this weekend, I haven't been able to use the media upload, add tags, or set a date to schedule posts on my site in full Edit mode. Preview also won't show changes unless I save, which didn't used to be the case. I am able to add tags and change the date in Quick Edit mode, but the only way to upload pictures is to ftp them and then manually img src. Yuck!
Has anyone else dealt with this? Or do you have any idea what's going on? Posting is such a bummer now!