We tested all GPS modules which were ever used on our devices. Even old ones like: FM42,FM21,FM22, FM31, FM41 etc.
Tested GPS modules: NEO-5m (ublox), TG1000 (our manufacture, chip = MT3333), GGG (our manufacture, chip = Teseo II), LocSys (dont recall which chip this is).
And all of those gps modules - passed our test for rollover after "on 6th of April 2019" date.
Regards