By no means unprecedented. In Australia we once had a belligerent senate block the bill of supply for that year. That's the piece of legislation that allows the government to spend money. It was basically a gentleman's agreement that you never block supply, there was no law that actually said they needed to approve of it. So the government couldn't spend any money, and it triggered a constitutional crisis and the Governor General (Queen's representative in Australia) fired the Prime Minister and dissolved parliament. Total meltdown, all because one of the basic functions of government wasn't actually put down on paper.
In all fairness that was a terrible budget that deserved to be blocked.