Allthough i have definitly a 2/3 – 1/3 Setup a placed big image in the 1/3 seems to blow up the smaller column.
See private content
ok – hat sich erledigt! da hatte sich eine Anweisung in mein quick css verirrt, die da nichts zu suchen hatte (table-layout : auto)
can be closed, because the behaviour is for a setting of my own on quick css. (table-layout: auto)