WebPlus X6: Unexpected object on form

Hi

I have a form which contains Comments text box.
When I preview a small dotted triangle appears in left bottom corner and if I highlight it allows me to stretch the text box both vertically and horizonitally.

I have used formss before in Webplus X6 and at worse all I got was scroll bar if text overflowed.

This latest problem will allow anyone using the form to resize the text box which is not what I want.

Any ideas as to why this has started to happen greatly appreciated.