Rich Text Editor

I have activated the basic rich text function on one of my text fields. (Called 'Notes')

I've set the view as HTML.
I can add a new record no problem.

I can edit the record no problem (provided there is text already in the 'Notes" column.)

If I try to edit a record where 'Notes' is empty, the 'Notes' field is just a blank box. No RTE, nothing. Just looks like a normal text entry box with the exception that it wont let me type anything in that box. I click it, and nothing. No cursor, nothing.

All other fields are totaly editable.
Known issue?
I'm on ASP 5.2 (Build 391)