It's because half your inputs are disconnected.
This opamp has differential inputs (two pins per input that reference each other). Regular op-amps, have single-ended inputs (one pin per input that references ground) Each differential input consists of a +/- pair of pins.
https://www.maximintegrated.com/en/app-notes/index.mvp/id/1108
As you have wired it, it's like wiring just the inverting or non-inverting input on a regular-op-amp and amp and leaving the other input hanging. If you don't need the differential part of the input, then you will have to use a resistisve divider or direction connection to a voltage source to bias one of the differential connections on each input pair.
This next part is unclear to me, but it looks as though either A or B pair can be treated as the inverting or non-inverting input by virtue of the fact you can wire the feedback up to either the + or - pin in each pair.
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If you don't understand what I'm saying, then play around with this:
Move one connection on each op-amp to somewhere other pair of inputs. Connect all remaining unconnected input pins to either:
1. the same resistive divider at mid-voltage bias
OR
2. directly to ground
What this should do is give all your inputs the same reference voltage. Since you aren't putting a true differential signal into your differential inputs, it means that if you reference to ground, you will lose half the dynamic range the op-amp inputs are capable of. Connecting it to a mid-voltage bias will give you the full dynamic range of the inputs. (True differential signals have both signals pairs swing above and below each other, but your input signal is single-ended which means that one signal in the pair swings around the other which is at a fixed voltage. If you make this fixed voltage ground, well you lose half the range because the signal doing the swinging can't swing below ground...but if you make the fixed voltage midsupply then you don't lose any range since the signal doing the swinging can swing below mid-supply until it hits ground).
These last instructions aren't exactly the solution to your problem because I don't feel like figuring out exactly what should be wired to where, but should make it so you start seeing something that makes more sense so you can start shuffling things around the inputs until it works. If you understood the first half, then you know enough to fix the issue.
EDIT: You might be able to also just leave what you have and tie the open + inputs low, and the open - inputs high so that the op-amp outputs a lo which should cause the internal NOR gate to ignore it.