Set a depositor for 2 money, have 1 money, use depositor - it takes your 1 coin, doesn't send any pulse but the money doesn't get deposited in the depositor, it's just... gone

I wonder, perhaps, if it's an off by one error then?

I can confirm this too.
However it does say "not enough money".
Yet if you set the required money to an amount higher, it says "not enough money" and does not consume the money.
So far it only happens if you set the required money to 2 and having only 1 money in your inventory