Why am I getting unhelpful error messages about arbitrary rules?

[Daniel Sedlacek]

"You cannot perform this operation on a draft workflow" is totally unhelpful error messages about totally arbitrary rule. Why?

See: https://answers.atlassian.com/questions/19695105

To add insult to injury, the "Help page" linked in the error popup does not contain any information about the problem. You could not care any less, could you?

[Nic Brough [Adaptavist]]

It's the same answer Christian gave on the question you've linked to.  There's a known issue with adding outgoing transitions to status that don't already have them in draft mode.

Yes, it's unhelpful as an error message, and it's a bit of a silly issue (not entirely sure it's a "bug", but it's definitely a problem).  I'm not sure if Atlassian plan to deal with it.

[Ignacio Pulgar Martín]

You are right, that kind of messages suck.