I think I've had similar things happen. Not just about where I am, but like, what I'm doing and stuff. Like it just goes totally blank. Or if there are several options and I can picture all of them, I'll sometimes randomly pick the wrong one, even if it's something I do all the time, like your example. I think it actually gets worse if it's something I do often, because I stop thinking about it and it becomes automatic, and after a while it will just fall out of my long-term memory bank. XD;;;; I don't even know.
It's not too good for cooking, but it's not really so bad.
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"You gotta keep making decisions, even if they're wrong decisions, you know. If you don't make decisions, you're stuffed."
- Joe Simpson