Cymunk crash that occurs when switching between screens that create Spaces

envtoselectionbacktrace

#0  0x00007ffff7826267 in __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:55
#1  0x00007ffff7827eca in __GI_abort () at abort.c:89
#2  0x00007ffff7869c53 in __libc_message (do_abort=do_abort@entry=1, 
    fmt=fmt@entry=0x7ffff79821a8 "*** Error in `%s': %s: 0x%s ***\n")
    at ../sysdeps/posix/libc_fatal.c:175
#3  0x00007ffff7871c69 in malloc_printerr (ptr=<optimized out>, 
    str=0x7ffff797e2fa "free(): invalid pointer", action=1) at malloc.c:4965
#4  _int_free (av=<optimized out>, p=<optimized out>, have_lock=0) at malloc.c:3834
#5  0x00007ffff787589c in __GI___libc_free (mem=<optimized out>) at malloc.c:2950
#6  0x00007fffe96e9c95 in __pyx_pf_6cymunk_6cymunk_4Body_2__dealloc__ (__pyx_v_self=<optimized out>, 
    __pyx_v_self=<optimized out>) at cymunk/cymunk.c:22259
#7  __pyx_pw_6cymunk_6cymunk_4Body_3__dealloc__ (__pyx_v_self=0x7fffe75ee9b0) at cymunk/cymunk.c:22231
#8  __pyx_tp_dealloc_6cymunk_6cymunk_Body (o=0x7fffe75ee9b0) at cymunk/cymunk.c:41229
#9  0x00007fffe96eb9b5 in __pyx_pf_6cymunk_6cymunk_5Space_2__dealloc__ (__pyx_v_self=<optimized out>, 
    __pyx_v_self=<optimized out>) at cymunk/cymunk.c:33185
#10 __pyx_pw_6cymunk_6cymunk_5Space_3__dealloc__ (__pyx_v_self=0x7fffe7601380) at cymunk/cymunk.c:33165
#11 __pyx_tp_dealloc_6cymunk_6cymunk_Space (o=0x7fffe7601380) at cymunk/cymunk.c:42215
#12 0x00000000004bb663 in ?? ()
#13 0x00000000004a946e in ?? ()
#14 0x00000000004ebba6 in ?? ()
#15 0x00000000004eac6f in PyObject_GetIter ()
#16 0x00000000004cdf27 in PyEval_EvalFrameEx ()
#17 0x00000000004e7cc8 in ?? ()
#18 0x00007ffff5ebdcb0 in __Pyx_PyObject_Call (func=0x7fffe99b5b90, arg=<optimized out>, 
    kw=<optimized out>) at /tmp/pip-build-l9sM3j/kivy/kivy/_event.c:14271
#19 0x00007ffff5ecbe95 in __pyx_f_4kivy_6_event_14EventObservers__dispatch (
    __pyx_v_self=<optimized out>, __pyx_v_f=<optimized out>, __pyx_v_slargs=<optimized out>, 
    __pyx_v_skwargs=0x934b60 <_Py_NoneStruct>, __pyx_v_obj=<optimized out>, 
    __pyx_v_value=<optimized out>, __pyx_v_largs=0x934b60 <_Py_NoneStruct>, 
    __pyx_v_kwargs=0x934b60 <_Py_NoneStruct>) at /tmp/pip-build-l9sM3j/kivy/kivy/_event.c:11451
#20 0x00007ffff5ecc511 in __pyx_f_4kivy_6_event_14EventObservers_dispatch (__pyx_v_self=0x5e37, 
    __pyx_v_obj=0x5e37, __pyx_v_value=0x6, __pyx_v_largs=0xffffffffffffffff, 
    __pyx_v_kwargs=0x3861653839323130, __pyx_v_stop_on_true=2037395301)
    at /tmp/pip-build-l9sM3j/kivy/kivy/_event.c:12154
#21 0x00007ffff5c86abf in __pyx_f_4kivy_10properties_8Property_dispatch (__pyx_v_self=<optimized out>, 
    __pyx_v_obj=0x7fffe75e4290, __pyx_skip_dispatch=<optimized out>)
    at /tmp/pip-build-l9sM3j/kivy/kivy/properties.c:5852
#22 0x00007ffff5c79bfb in __pyx_f_4kivy_10properties_8Property_set (__pyx_v_self=0x7fffe9694120, 
    __pyx_v_obj=0x7fffe75e4290, __pyx_v_value=0x2166f88, __pyx_skip_dispatch=<optimized out>)
    at /tmp/pip-build-l9sM3j/kivy/kivy/properties.c:5203
#23 0x00007ffff5c5d7d9 in __pyx_pf_4kivy_10properties_8Property_18__set__ (__pyx_v_val=<optimized out>, 
    __pyx_v_obj=0x7fffe75e4290, __pyx_v_self=0x7fffe9694120)
    at /tmp/pip-build-l9sM3j/kivy/kivy/properties.c:4680
#24 __pyx_pw_4kivy_10properties_8Property_19__set__ (__pyx_v_val=<optimized out>, 
    __pyx_v_obj=0x7fffe75e4290, __pyx_v_self=0x7fffe9694120)
    at /tmp/pip-build-l9sM3j/kivy/kivy/properties.c:4653
#25 __pyx_tp_descr_set_4kivy_10properties_Property (o=0x7fffe9694120, i=0x7fffe75e4290, 
    v=<optimized out>) at /tmp/pip-build-l9sM3j/kivy/kivy/properties.c:28064
#26 0x00000000004e1819 in PyObject_GenericSetAttr ()
#27 0x0000000000562cb6 in ?? ()
#28 0x00000000004ccd05 in PyEval_EvalFrameEx ()
#29 0x00000000004cd4e2 in PyEval_EvalFrameEx ()
#30 0x00000000004cd4e2 in PyEval_EvalFrameEx ()
#31 0x00000000004cd4e2 in PyEval_EvalFrameEx ()
#32 0x00000000004cd4e2 in PyEval_EvalFrameEx ()
#33 0x00000000004cd4e2 in PyEval_EvalFrameEx ()
#34 0x00000000004cd4e2 in PyEval_EvalFrameEx ()
#35 0x00000000004cd4e2 in PyEval_EvalFrameEx ()
#36 0x00000000004cb6b1 in PyEval_EvalCodeEx ()
#37 0x00000000004cd217 in PyEval_EvalFrameEx ()
#38 0x00000000004cd4e2 in PyEval_EvalFrameEx ()
#39 0x00000000004cb6b1 in PyEval_EvalCodeEx ()
#40 0x000000000050481f in ?? ()
#41 0x00000000004fc182 in PyRun_FileExFlags ()
#42 0x00000000004fb247 in PyRun_SimpleFileExFlags ()
#43 0x000000000049aa6e in Py_Main ()
#44 0x00007ffff7811a40 in __libc_start_main (main=0x49a500 <main>, argc=2, argv=0x7fffffffddb8, 
    init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fffffffdda8)
    at libc-start.c:289
#45 0x000000000049a429 in _start ()