This happens when I am in My Profile and click on any of the following: Awards, Stats, Appearance, Equipment or Score History. In each case a box pops up which is too small (the Close bar on the bottom right is off the screen), and nothing responds to any click - everything is frozen. The X in the top right corner does not close the box and nothing else responds. The only choice at this point is to reload WGT from my bookmark.
I went into Play Now and chose edit equipment and that worked. So for the moment it looks like the bug is limited to the choices in My Profile.