So i was playing italian air arcade 2.0, and i got 3300 xp, my plane was around 1700 xp, and i had 1500 xp remaining, and before starting to research any plane, i wanted to view a bomber, and when i quit the research zone and went back, the remaining xp wasnot added to any aircraft it just dissapeared, idk if its on purpose or it was a mistake but i tought i will notify about this