Crash in ModemManager

I see a crash of ModemManager in the logs of my Librem 5. See also this issue I reported in GNOME Calls.

           PID: 6854 (ModemManager)
           UID: 0 (root)
           GID: 0 (root)
        Signal: 6 (ABRT)
     Timestamp: Sat 2023-03-11 12:11:50 CET (2 days ago)
  Command Line: /usr/sbin/ModemManager
    Executable: /usr/sbin/ModemManager
 Control Group: /system.slice/ModemManager.service
          Unit: ModemManager.service
         Slice: system.slice
       Boot ID: 2e0d8573edcb4354b30e1ef764aa518a
    Machine ID: 9b43caf3619f49f8ba467ec270970f44
      Hostname: avalon
       Storage: /var/lib/systemd/coredump/core.ModemManager.0.2e0d8573edcb4354b30e1ef764aa518a.6854.1678533110000000.zst (inaccessible)
       Message: Process 6854 (ModemManager) of user 0 dumped core.
                
                Stack trace of thread 6854:
                #0  0x0000ffffb7ff8eac raise (libc.so.6 + 0x33eac)
                #1  0x0000ffffb7fe5aa0 abort (libc.so.6 + 0x20aa0)
                #2  0x0000ffffb8539b00 g_assertion_message (libglib-2.0.so.0 + 0x7cb00)
                #3  0x0000ffffb8539b60 g_assertion_message_expr (libglib-2.0.so.0 + 0x7cb60)
                #4  0x0000aaaac659ab90 n/a (ModemManager + 0xcab90)
                #5  0x0000aaaac656cfb4 n/a (ModemManager + 0x9cfb4)
                #6  0x0000ffffb82bf06c n/a (libgio-2.0.so.0 + 0xbf06c)
                #7  0x0000ffffb82bff64 n/a (libgio-2.0.so.0 + 0xbff64)
                #8  0x0000aaaac654f944 n/a (ModemManager + 0x7f944)
                #9  0x0000aaaac654fa44 n/a (ModemManager + 0x7fa44)
                #10 0x0000ffffb8995018 g_closure_invoke (libgobject-2.0.so.0 + 0x15018)
                #11 0x0000ffffb89a89e4 n/a (libgobject-2.0.so.0 + 0x289e4)
                #12 0x0000ffffb89ae898 g_signal_emit_valist (libgobject-2.0.so.0 + 0x2e898)
                #13 0x0000ffffb89aee90 g_signal_emit (libgobject-2.0.so.0 + 0x2ee90)
                #14 0x0000ffffb8999f28 n/a (libgobject-2.0.so.0 + 0x19f28)
                #15 0x0000ffffb899965c n/a (libgobject-2.0.so.0 + 0x1965c)
                #16 0x0000ffffb899d32c g_object_set_valist (libgobject-2.0.so.0 + 0x1d32c)
                #17 0x0000ffffb899de38 g_object_set (libgobject-2.0.so.0 + 0x1de38)
                #18 0x0000aaaac655368c n/a (ModemManager + 0x8368c)
                #19 0x0000aaaac659013c n/a (ModemManager + 0xc013c)
                #20 0x0000ffffb82bf39c n/a (libgio-2.0.so.0 + 0xbf39c)
                #21 0x0000ffffb899a960 g_object_unref (libgobject-2.0.so.0 + 0x1a960)
                #22 0x0000aaaac65957a8 n/a (ModemManager + 0xc57a8)
                #23 0x0000ffffb82bf06c n/a (libgio-2.0.so.0 + 0xbf06c)
                #24 0x0000ffffb82bff64 n/a (libgio-2.0.so.0 + 0xbff64)
                #25 0x0000aaaac654f914 n/a (ModemManager + 0x7f914)
                #26 0x0000aaaac654f9b8 n/a (ModemManager + 0x7f9b8)
                #27 0x0000ffffb851172c n/a (libglib-2.0.so.0 + 0x5472c)
                #28 0x0000ffffb8510ab4 g_main_context_dispatch (libglib-2.0.so.0 + 0x53ab4)
                #29 0x0000ffffb8510e5c n/a (libglib-2.0.so.0 + 0x53e5c)
                #30 0x0000ffffb85111b0 g_main_loop_run (libglib-2.0.so.0 + 0x541b0)
                #31 0x0000aaaac6527574 main (ModemManager + 0x57574)
                #32 0x0000ffffb7fe5e18 __libc_start_main (libc.so.6 + 0x20e18)
                #33 0x0000aaaac65277c8 _start (ModemManager + 0x577c8)
                #34 0x0000aaaac65277c8 _start (ModemManager + 0x577c8)