Eraesr writes "Chief Executive Officer, Founder and Technical Director Tim Sweeney presented the company’s award-winning Unreal Engine 3 (UE3) technology running fully inside an Adobe Flash-based environment during a keynote at Adobe MAX 2011." Link to Original Source
If it happens once, it's a bug. If it happens twice, it's a feature.
If it happens more than twice, it's a design philosophy.