Issue with Microsoft SharePoint InputFormTextBox control in RichText mode.

I have the following control in my App.

The control gets rendered alright,Everything works great except for the following:
txtBxDetails.ReadOnly = true; Or txtBxDetails.Enabled = false.
Interestingly,both these properties don't work,The control is very much editable even after the above properties are set.
At the sametime,If I happen to remove the RichText property,the ReadOnly / Enabled property works fine for the InputFormTextBox field.()
To summarise,If the RichText = "true" the ReadOnly / Enabled properties don't work..
SharePoint Service Pack 1 - has not fixed this.

Microsoft has acknowledged this as a valid bug and recorded this in their bug database.

Expect a fix for this in the next SharePoint release..