Reporting Designer in BIDS 2008 Column Visibility Bug

A small issue with BIDS I just found out about – if you want to modify the visibility expression of a column in Business Intelligence Development Studio 2008 you may find that the Fields list is empty and that Report Designer cannot see a Dataset binding for the column. Regardless of that, if you type in a Fields!<field_name> expression and you get a red curvy line indicating something is wrong with it, you will be able to deploy the report and the visibility of the column will get toggled by the expression. So it actually works but also could be annoying.

Note (2009-02-07): This appears if you have a tablix within a tablix and the outer tablix does not have a dataset associated with it.