Please setup reinstancePhysicsMesh() to provide unique physics shapes to compound parented route objects,
spawning a compound root, and parenting a child to it, and spawning another copy of the root,
when in physics view, you can see the added copy of the root shares the compound collision shape
of the first copy.
a work around currently that works, but I do not understand, is to remove all children from all copies of the root,
add a new root, then reparent all children...... it is however a massive pain.
it appears to be only when adding a copy of a compound route with children.....
in the test file the the cube on the left compound parents to a spawned object,
the next spawned copy will have the physics shape of the first copy
unless you press space -> removing the parent from the inital pair -> note the next spawned copies do not have the physics issue.
Nor do they gain them if you parent something, it is only when you spawn a new copy.
I have been fighting this bug for years.