MC7304 self-resets after entering PIN

I am using MC7304 (Firmware revision: SWI9X15C_05.05.61.00 r28313 CARMD-EV-FRMWR1 2015/05/21 23:40:18) installed in Vecow IVH-9008, using Debian Stretch (kernel 4.9.78) and controlled by ModemManager (1.6.4)

Every time after entering PIN / unlocking the modem by using mmcli tool, modem self-resets.
It is 100% reproducible with Salt and Sunrise SIM cards (Switzerland).

If PIN is disabled, this problem doesn’t occur and modem can connect with no issues.

Has anyone come across this behavior and found some solution?