Are you sure there are contacts on the SIM? I actually never use the SIM for contacts, I just use Google.
Yes i'm sure there are contacts on sim cards (Sim 1 120 and sim 2 200) me too i use google but not all my contacts are synchronized.
I have checked on mine version 2.7 and it sees the contacts on the SIM through import. Which version are you on?
Hello
recovery_TWRP_2_8_7 Version