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While drawing a circuit I I flipped an op amp (the version with voltage rails drawn) vertically.

So technically there should have been some kind of mismatch because after that flip the "Voltage rail 1" connector was connected to negative power supply while "Voltage rail 2" connector was connected to positive voltage supply.

Then I ran a comparative simulation with two identical circuits but an opposite connection of the voltage rails: both circuit's output was identical. Would this happen with real-world op-amps or is it a CL feature/strangeness ?