Below schematic is a simplified version of a power supply:

^{simulate this circuit – Schematic created using CircuitLab}

When the voltage is set to 12V and current limit is set to 100 mA and output is connected to a resistive load (10 ohm), the current pulled from the supply is exactly 100 mA. but when an inductive load is connected (brushless fan) it only pulls 75 mA from the supply.

Why inductive load draws less current when there's room for it to draw more? Is it because of it's inductive properties or I should look for the source of the problem in the circuit?

Edit:

All op amps have negative supply, op amps supply are independent from the main power line so voltage drop do not affect them.