Information:
I have one Shelly 3EM and several Shelly EMs.
I tested them on one-phase net.
All current transformers are connected in the same direction (K -> L) on the same wire.
Shelly EM power consumption in GUI is positive but Shelly 3EM is negative (all 3 phases).
Shelly 3EM transformers (120 A) have connectors, Shelly EM transformers (50 A) have red/black wires.
What is going on?
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Edit 29.1.2022 - the two original photos of the wiring disappeared, so I am including them again. That explains to thgoebel - no clamp is skewed - all clamps are located in the same direction on the same (single) wire.
And you can see that also phase wires are correctly connected.
And all EM read +109 W while 3EM reads -109 W.
Edit 29.1.2022 (No. 2) - And now I am adding printscreens of devices' GUI.