The rotation step is not preserved after the insertion of a submodel.
Reason: the rotation step is cleared line 1091 of traverse.cpp, in findPage, and not restored afterwards.
Solution: save it and restore it. One should modify the class RotStepMeta so that copying
it also copies the value of the rotation.
File bug1.mpd is an example showing the bug
File bug1_patch.txt is a patch to correct the bug
example showing the bug
patch