I'm using irrlicht 1.1(not the latest version) to write an application, it works great for my purposes.
However I have done a routine to implement mouse picking but it misses some clicks.
It seems that around a 10% of clicks getSceneNodeFromScreenCoordinatesBB returns null, but I'm clicking a node.
Is this a known bug? Is it known how to fix it? Maybe is it fixed in the svn ?