Usually if something isn't working it becomes a bottleneck so a lot gets built up behind it. Once the 'dam breaks' so to speak you're playing catch up plus you probably don't want to think about the problem anymore. This is also a reason things don't get documented.
Also its easy to verify that it doesn't work but hard to verify that it does. So often it might take time to verify that and when you're confident about it you've lost the chat session or closed the browser, restarted the computer, went home already etc.
