Created by: goshacmd
Collecting all the relevant details early on means less back and forth between the poster and project contributors. Asking to create a small reproducible demo means less time wasted trying to repro the bug.
Brunch has been doing this for a while and it has really helped. There are people who deleted the template and went free-form in their bug reports but for the most part, people have actually been filling that in: https://github.com/brunch/brunch/issues?q=is%3Aissue+is%3Aclosed
A lesser percentage of the people were creating the demos, but a few definitely were. The details, and the demos especially, led to faster resolution times, which a win for everyone.
I do see bugs account for about 13% of issues so there might be a bit less value of this than for Brunch, but the first few bug reports I picked from the list have @gaearon asking for env details/demo, which is a routine work that can be precisely removed with the issue template.