Why do you trust ctrl-s though? You are a software engineer, you know that a bug in the piece of code that saves the document would affect both calls, regardless of whether its invoked by a timer or by the end user pressing keys, right?
I mean we have all been bitten by op’s problem In the past but it was exactly the same issue, autosave not enabled (most likely didn’t exist) what’s with all these, I don’t trust software to do it’s job so I do things by hand?
Particularly from software developers or other technical users. Found a bug in a piece of software, report it, you don’t need to change your behaviour for the next 20 years and tell everyone anecdotes about you still don’t trust a regression.