Simple SW loading circuit despite secondary side is floating?

I can’t quite understand how SW1 can load the circuit when “SwitchSide_NC” is floating.
it’s like the SW has parasitics that isn’t constant to ground.

Could someone explain this to me? and if so how can I get rid of the parasitic loading?

Some more info:

Seem like the SW1 magically draws power from V5 without the current going anywhere where you can probe its where about.

switch.qsch (5.8 KB)

Looks like it does, but it is minimal leakage.

Best regards