Thanks, it worked for me too. It's great to have a good support community!
To be clear, I had:
<telerik:RadTextBoxID="RadTextBox1"runat="server" Width="250" Font-Size="16px" Height="32px"/>
This text was sometimes cut off like others showed. I changed it as follows. I added a css class called largeFont.
.largeFont{ font-size:16px!important;}
Then changed my markup to this:
<telerik:RadTextBoxID="RadTextBox1"runat="server" Width="250" CssClass="largeFont" Height="32px"/>