[OpenLayers-Users] Problem with 2.12 transition: resize

[Markus Spring]

Dear all,

I am trying to get my feet wet with the transition effects available in
2.12.

Whenever I enable this effect for my layer, I randomly observe that
parts of my ka-map tiles in the lower part of the map are not drawn. If
I pan just a minimum amount, the missing parts will be displayed, too. See

http://markus-spring.info/varia/ol2_12_transition_resize_problem.jpg

and try yourself

http://maps.muenchen.de/cgi-bin/maps2.cgi/rgu/bebauungsplan

I have found no explanation for this weird effect.

Any help would be greatly appreciated.

---Markus