I think the covid19-caused economic decline can already qualify for an economic crisis in Bitcoin lifetime, so it's better to say that Bitcoin has never seen a major global economic crisis. We saw Bitcoin taking a heavy hit from the initial shock, meaning it's currently not a true safe haven asset. But then came a quick recovery, and for some time Bitcoin seemed to not be correlated with other markets. Then the bull run sparked from institutional fear of US dollar inflation, and now that this fear has been reduced Bitcoin is on decline, though in larger picture it has gained a lot. But there is no rule that says that Bitcoin must behave like that during the next crisis.