IButton title is not empty by default

[rottem]

Hi,
I am working with the nightly build: SNAPSHOT_v8.3d_2012-10-10/LGPL Development Only (built 2012-10-10)

When I create a button using

IButton button = new IButton();
button.setIcon("myImage.png");

I get a button containing the icon as well as the following text "Untitled Button".
This didn't happen in previous builds.
Thanks