The first thing I have to do every time I open a XMLUpdater's properties is stretch the form to near whole screen width.
The first thing I have to do every time I open a XMLUpdater's properties is to adjust the column widths in the 'Updates' list so that the 'XML Path' and 'Value' columns are wide enough to see their contents properly.
The properties page should either remember what size it was previously and what the column widths in the 'Updates' pane were OR it should size itself to show all of the widest record in the 'Updates' section or to be the whole width of the screen, whichever is the lesser.