Depending on the size of the team/org/company, working on anything other than the next feature is a hard sell to PM/PO/PgM/management.
That's what I hear.
I've had some mix of luck and skill in finding these jobs. Working with people you've worked with before helps with knowing what you're in for.
I also don't really ask anyone, I just fix any bugs I find. That may not work in all organizations :)
I've had to inform leadership that stability is a feature, just like anything else, and that you can't just expect it to happen without giving it time.
One leader kind of listened. Sort of. I'm pretty sure I was lucky.