Current and future release bugs are usually shared

[Alberto Salvia Novella]

Just a small insight: if you are looking for debugging an Ubuntu 
release, it is usually a good idea looking at bugs in the previous 
releases too. As those are usually present in the latest release even 
when not tagged as such.

For example, if you want to make Xenial stable it would be good 
including bugs in Wily too.

Have a nice daday!