Switch off an optimization by default, to avoid support burden: update all objects AABBs and not just the active objects.

Call world->setForceUpdateAllAabbs( false) to re-enable the optimization: it will only update active objects (skipping static geometry)
See also http://bulletphysics.com/Bullet/phpBB3/viewtopic.php?f=9&t=4073

src/BulletCollision/CollisionDispatch/btCollisionWorld.cpp

@@ -45,7 +45,8 @@ subject to the following restrictions:
 btCollisionWorld::btCollisionWorld(btDispatcher* dispatcher,btBroadphaseInterface* pairCache, btCollisionConfiguration* collisionConfiguration)
 :m_dispatcher1(dispatcher),
 m_broadphasePairCache(pairCache),
-m_debugDrawer(0)
+m_debugDrawer(0),
+m_forceUpdateAllAabbs(true)
 {
 	m_stackAlloc = collisionConfiguration->getStackAllocator();
 	m_dispatchInfo.m_stackAllocator = m_stackAlloc;
@@ -164,7 +165,7 @@ void	btCollisionWorld::updateAabbs()
 		btCollisionObject* colObj = m_collisionObjects[i];
 
 		//only update aabb of active objects
-		if (colObj->isActive())
+		if (m_forceUpdateAllAabbs || colObj->isActive())
 		{
 			updateSingleAabb(colObj);
 		}

src/BulletCollision/CollisionDispatch/btCollisionWorld.h

@@ -94,6 +94,9 @@ protected:
 
 	btIDebugDraw*	m_debugDrawer;
 
+	///m_forceUpdateAllAabbs can be set to false as an optimization to only update active object AABBs
+	///it is true by default, because it is error-prone (setting the position of static objects wouldn't update their AABB)
+	bool m_forceUpdateAllAabbs;
 
 public:
 
@@ -404,6 +407,15 @@ public:
 		return m_dispatchInfo;
 	}
 	
+	bool	getForceUpdateAllAabbs() const
+	{
+		return m_forceUpdateAllAabbs;
+	}
+	void setForceUpdateAllAabbs( bool forceUpdateAllAabbs)
+	{
+		m_forceUpdateAllAabbs = forceUpdateAllAabbs;
+	}
+
 };