Hello Bruce
There is another bug which I found using checkbox.
See example - BrowseInForm (21)
There is a procedure called BrowseInvoice. One of column is column Paid, which has set Edit In Place as checkbox and eip conditional on false. So first of all set conditional to true, then You will see a bug.
When You click on checkbox, error Record Not Avaiable (33) will displayed, because checkbox lost unique record ID.
This is in Firefox. In Opera it works and there is no problem.
Regards,
Matthew