Chart axis labeling spoiled after upgrade from OH1 to OH2

Hi all,
after upgrading from OH1 to OH2 the labels at the axis of my charts are unreadable. Please see attached screenshot.

Does anybody have an idea what might be wrong here ?

Thanks for any hint.

Nobody, see here. But you might want to help analysing what is different on your setups to other setups - best to follow up on OH2.1: Fonts Scrambled - maybe you two can identify the root cause (which I suspect somewhere in the Linux graphics/font system).