[tom_]

You may be correct in the larger sense, but there will be multiple teams working on Windows, with non-interchangeable staff. Assuming anybody found this bug before, somebody on the Explorer team almost certainly will have rationally prioritized it.

[lupire]

Why? Would someone rationally get a bonus for fixing this instead of whatever quarterly promise they made to their boss? What's rational about fixing a bug that isn't threatening revenue?

[tom_]

They wouldn't. The person rationally prioritizing this bug will have put it somewhere down the bottom of the list. And that's how we find ourselves here, with the issue unfixed.