Hmm... is there anything odd about the first few characters in that entry? Like are they in a foreign character set?

This is a new one...

On the latest post to 3 Stations East, the editing process was seamless.  But when I got the "post successfully added" screen, I noticed that the first few characters of the entry were corrupted into other characters.

This happens any time I edit just this entry - others don't appear to be affected.

A screenshot, in PNG format.

Thanks!