reproducible with 061213

see http://www.netbeans.org/issues/show_bug.cgi?id=80867
and http://www.netbeans.org/issues/show_bug.cgi?id=84207
also, both are more specific to certain cases, similar bugs may be filed against
most elements/diagrams.

I didn't see any workarounds for the issue, if I need to zoom it's not a
workaround to say 'not to use zoom'. There is two issues with zoom: relative
size of text and graphics and relative position, both are wrong with non-100%
zoom level.
Text shifts when zoom in and also shifts when zoom out, in zoom out mode text
usually decrease faster than graphics and shifts and in zoom-in mode grow faster.
In Issue 84207 attached more worst case when shift became enormous, i.e when
there is stereotype in class element.