Removing a addPolyComponentIdChangedCallback can cause a crash (Maya 2019)

testPolyComponentIdChanged.py

#execfile('/Volumes/home/paulm/Desktop/testPolyComponentIdChanged.py')
import maya.cmds as cmds
import maya.api.OpenMaya as om

cmds.file(f=1, new=1)
cubeTrans = cmds.polyCube()[0]
cubeShape = cmds.listRelatives(cubeTrans)[0]

sel = om.MSelectionList()
sel.add(cubeShape)
mobj = sel.getDependNode(0)

def myPolyComponentCallback(*args, **kwargs):
    print "poly components changed!"

polyCompCbid = om.MPolyMessage.addPolyComponentIdChangedCallback(mobj, (True, True, True), myPolyComponentCallback)

def removeCallbacks(*args, **kwargs):
    print "removing callbacks..."
    om.MMessage.removeCallback(polyCompCbid)
    del globals()['polyCompCbid']

polyDestroyCbid = om.MNodeMessage.addNodeDestroyedCallback(mobj, removeCallbacks)

cmds.refresh()
cmds.undo()
cmds.refresh()