They're really different product lines because each one is a complete rewrite; each has its own patch stream, which, like yours, change wildly without warning, as if the developers are just trying random stuff out. And nothing is ever backported between the products. While our different products have wildly different operational characteristics (and even move into different lifecycle phases at different times), the good news is that our team has gotten better at managing the constant flow of UX inconsistencies and changes.

For example, my advice on sleep mode failures is to use the Erlang method: let it crash. We don't even look at the monitoring dashboards for our newest product anymore.