Cancelling Mines construction before building starts

Lets say I have 2 or 3 buildings in my queue and the second one is a mine; if I cancel the construction of the second building (the mine) during the first building construction takes place, I lose the resource deposit - so I have to send the geologist again. I'm not sure if this a a bug, or this is how is supposed to happen :confused: (I would understand to behave like this if the mine construction started and then I cancel... then yes, I get back 20% of construction material and lose the mine deposit).

Thank you,
Sir Hex