That one is #537.  I just came across that myself last night.  It slipped
in when added support for formatted copy/paste.  We should be able to nail
that one quickly. 
>Also, some cut'n'paste involves ligatures.  (fl ffl ff fi ffi...)
>In 0.7.3, some of these would generate form-feeds.  If the file 
>were saved while these were still in, it wouldn't load.  I haven't
>tried to reproduce this at this point.  One ligature that caused a
>problem came in as hex '14', if that helps any...
I'll see if I can track this down.  Watch bugzilla for more information.
If you come up with anything else before I can get to it, drop me a line.   
Robert Sievers
Open Source Evangelist