Skillshot Bug?

I’ve noticed it more in urf games (just more abilities more often I assume), but skillshots have been firing off in opposite or awkward directions, completely off of wherever the mouse is pointed. I know for a fact that this isn’t caused by flicking the cursor too aggressively, because I’ll be looking at a completely different part of the map and have the cursor on-screen (not on the minimap) and still watch as a snowball or some other skillshot goes wild. Quite aggravating.