I've been perusing the forum posts, and I've found a few things referencing a SetTimeout causing errors when 'playing' a walk-through, but I didn't find any ways around it.

Did I miss something during the search?

Or is that just the way it is, since walk-throughs are really designed for testing purposes anyway?

(As long as it doesn't effect loading from a saved game (which it doesn't), I'm fine. But it would be nice to fix this during testing.)

A walkthrough does everything at once, so generally a timeout will not have happened before the walkthrough completes. I am not aware of anything besides that.

I've just got my first few rooms set up strangely. Otherwise, there would be no problems at all. As long as I start my walkthrough after my fourth command, it's all good! (Loading a saved game poses no problems whatsoever, so, meh.)