This sad thing happens to me pretty often. My game frequently lags and also usually loads levels slower then others (I know that because often see people starting trucing while my window is still loading).
Mouse clicks that I do on map to move it are delayed and when buy window appears they ‘come’ there and I find myself bought something, happy if it is just tracers, but more often funky bombs or other expensive stuff, have to sell it, but you know – my economy is ruined if these are early rounds.
Could that be fixed some way? Maybe the memory buffer for mouse clicks could be forcefully cleared at the moment buy window appears?