it913x USB DVB-T tuner reported as DVB-C after GUI restart

I have some problem with it913x USB DVB-T dongle.

Everything is Ok after start from deep standby, but the dongle somehow 'becomes' DVB-C after enigma2 restart. It is reported as DVB-C in about tuner dialog, it has DVB-C options in tuner config dialog, and tuner is not used for DVB-T input. 

After reboot (deep) everything is back to normal, and it913x is reported as DVB-T correctly with correct tuner setup. And it works until next enigma2 restart.

Box info:

Vu+ Duo², OpenPLi 4 (latest with online upgrade from 20131018 flash version).

DVB-S2 Dual + DVB-T\C (set up as DVB-T) + it913x DVB-T USB dongle.

Any help appreciated.

Regards.