Youre right, a break should probably abort the run.
The problem is when you pause, it says "Resume - Give Up - Next Track - Quit" and not "Give Up - Give Up - Next Track - Quit".
Pausing is intended, we can agree on that at a minimum. But it's a bug and it should probably be looked into and either be fixed (Pausing won't invalidate times), or not ("Hey you just paused the game, your times are invalid" or "Invalidate Time - Give Up - Next Track - Quit". I couldn't care less about my personal time anymore; I think it'd be like 3rd place lol. But now we're in the same situation as honking your horn breaking times without anyone knowing. ex. Sure it's an intended mechanic to honk, but there's a bug where horns slow down FPS and invalidate your times, you just have to find out the hard way that horns are bad.
This is just a friendly bug report now
(Who am I kidding, Ill see you crazy pause-bugs, checkpoint-bugs, land-bugs, etc in about 15 days and it'll be like we first met

)