On V1.0
MC and SA not show "new" fault if there are already one.
The test I have done:

1. in normal flight, switch OFF one left tank FUEL PUMP switch, LOW PRESSURE light and MC+SA(FUEL) lit up correctly
2.Reset MC, but keep FUEL PUMP off
3.Turn off another main tank's FUEL PUMP, maybe the right one, or another left one, same.
4. Now the new LOW PRESSURE light is on, BUT the MC+SA doesn't show up, IRL it should lit up now.
5. I can switch back on and off the first switch I moved in step 1, the MC+SA still stay off.

I also tried same logic with SA(ANTI-ICE) by prob heat and window overheat test switches, it's the same result, so I think it's the logic fault on all system.