I´ve another issue. No idea if caused by 1.2.11 or my 4 new boards. Acutally they should be identical to the 3 from the first aliexpress order. But the new one do have NEO-M8N and not like the old boards NEO-6M. And in addition the boards with M8N doesn´t have the IC right next to the small puffer battery cell in the right top corner of the pcb.
When powering the tbeams with M8N the red led is off and after a while it is solid on, which uses batterypower without benefit.