This is a bug. The problem is that you are not supposed to see the rich text editor for this field. It was added to it in error. Reviews are submitted by customers, and by design are supposed to contain no HTML whatsoever as a security measure.
The storefront does not allow you to submit a review with any HTML in it, and the control panel is supposed to do the same thing.
This is resolved in the next release. You can fix this in v1.0.0 and 1.0.1 by running the following query in the MySQL query tool in your control panel:
Code:
UPDATE `Field_Definition` SET `Width` = '640',`Use_Rich_Text` = '0',`Last_Modified` = '2008-07-09 09:21:00' WHERE `record_number` = 959;
UPDATE `Field_Set` SET `Field_Set_Class` = '',`Last_Modified` = '2008-07-09 09:03:00' WHERE `record_number` = 187;