Is Unreal Engine for game developers or for engine troubleshoothers?

I haven’t checked 4.13 yet and I don’t intend to do so until the last moment. Like I said, the sad reality is every new update introduces new bugs and unfair as it may be, I rather let others deal with it, which is a sad consequence of Epic’s policy of churning out update after update because they want to get new features in instead of fixing old bugs. Sad.