Exiting an llVolumeDetect object by
teleporting to a landmark
fails to generate a collision_end event and prevent collision_start events on re-entry by teleport or even walking into the object. Exiting by
sitting
on an external target fails to generate the collision_end but does not prevent re-entry from generating collision_start events. Exiting the volume by teleporting to a
map target
(or SLURL) generates the collision_end as expected.