Multiple MasterPages

[VitalyA]

I want to show one of the GRID objects of my report in Landscape orientation and all another in Portrait orientation. I created 2 Master Pages. For this specific GRID I use Landscape  Master Page. But when I render my report to PDF format I get another report elements rendering in Landscape and specific GRID rendered in Portrait orientation. It seems that depends on report page number different report elements rendering in Landscape. Is there known bug about this?