How do manufacturers of physical products handle defects? Aren't they obligated to correct defects through recalls and similar mechanisms? I don't see why software wouldn't work similarly.
Also note that expectations can vary quite a bit between physical and software products. For an example, my vacuum cleaner fairly often shuts down if I stop and re-start it too soon. If this happened with an app, I would certainly consider it a pretty ugly bug, and might ask when they plan to fix it. But I would never consider sending the vacuum cleaner to a service station to try and get rid of it - and I think there is little chance they could fix it even if I did.