Thank you, great idea. Just using the SetColumn to another column before setting the italic property, then SetColumn back to the desired column, solved it. SetRedraw (which I had actually already tried!) wan't required.

IMO, this is a bug. if you do a modify or an expression value changes, it should change the edit control display properties as well. I bet it probably always worked that way, but it is still a display bug. I've run into this myself.

this work around only works if you have more than 1 editable column in a datawindow.