Comment 6 for bug 571373

Comment #7 in related bug #259329 describes the fix for the text tool as «a hack to set a matrix attribute which "disables" group's matrix by adding reverse matrix» (I haven't figured out the revision that added the 'hack' to the text tool). Can a similar approach be used when inserting the rendering of the LaTeX formula (take into account that PS/PDF and SVG use different coordinate systems, or handle the transformation matrix of the parent group/layer)?

This problem seems to affect other extensions too:
- measure a path in Graph0.eps: the text is inserted upside down
- measure the area of a newly created rectangle: the measurement string is inserted way outside the measured area, upside down as well.