ModemManager no longer recognizes Telit LE910C4 via QMI after upgrade from 1.18 to 1.21

When running Ubunto 20.04 with ModemManager v1.18 the Telit LE910 C4 works just fine and Im able to setup a EPS bearer and cdc_wdm0 device sets up fine.

However, after upgrading to ModemManager 1.21 I notice that the cdc_wdm0 device is no longer being setup properly and Ive also noticed ModemManager gives a failure message when issuing the command: mmcli -m <ModemIndex> --3gpp-set-initial-eps-bearer-settings="apn=ApnName". The error is as follows: error: couldn't set initial EPS bearer properties: 'GDBus.Error:org.freedesktop.ModemManager1.Error.Core.Unsupported: Operation not supported'

Any advice on how to debug ModemManager not properly detecting a QMI device when the qmi_wwan device driver is listed as the primary driver would be greatly appreciated. Below I will post the output of mmcli for my modem after setting up a connection (conncetion reports as connected, but its not worknig properly, .i.e pinging doesnt work)

root@focal-venice:/etc/udev/rules.d# mmcli -m 0
  --------------------------------
  General  |                 path: /org/freedesktop/ModemManager1/Modem/0
           |            device id: 
  --------------------------------
  Hardware |         manufacturer: Telit
           |                model: LE910C4-NF
           |    firmware revision: 25.21.660-P0F.661806
           |            supported: gsm-umts, lte
           |              current: gsm-umts, lte
           |         equipment id: 
  --------------------------------
  System   |               device: /sys/devices/platform/soc@0/32c00000.bus/32e50000.usb/ci_hdrc.1/usb1/1-1/1-1.2
           |              drivers: option, qmi_wwan
           |               plugin: telit
           |         primary port: ttyUSB2
           |                ports: ttyUSB0 (ignored), ttyUSB1 (gps), ttyUSB2 (at),
           |                       ttyUSB3 (at), ttyUSB4 (ignored), wwan0 (ignored)
  --------------------------------
  Status   |       unlock retries: sim-pin (3), sim-puk (10), sim-pin2 (10), sim-puk2 (10)
           |                state: connected
           |          power state: on
           |          access tech: lte
           |       signal quality: 71% (recent)
  --------------------------------
  Modes    |            supported: allowed: 2g; preferred: none
           |                       allowed: 3g; preferred: none
           |                       allowed: 2g, 3g; preferred: none
           |                       allowed: 4g; preferred: none
           |                       allowed: 2g, 4g; preferred: none
           |                       allowed: 3g, 4g; preferred: none
           |                       allowed: 2g, 3g, 4g; preferred: none
           |              current: allowed: 3g, 4g; preferred: none
  --------------------------------
  IP       |            supported: ipv4, ipv6, ipv4v6
  --------------------------------
  3GPP     |                 imei: 
           |          operator id: 310410
           |        operator name: AT&T
           |         registration: roaming
           | packet service state: attached
  --------------------------------
  3GPP EPS | ue mode of operation: csps-2
  --------------------------------
  SIM      |     primary sim path: /org/freedesktop/ModemManager1/SIM/0
  --------------------------------
  Bearer   |                paths: /org/freedesktop/ModemManager1/Bearer/0