I tend to make rooms with long rows of beds (dorm style) and I've noticed that when trying to walk past them, the path that my colonists have zig-zags them up into the space between the bed and then back out.
(I'd have a screen-cap, but for some reason I can't print-screen it, either?)
I have a save... To see it in action (if you actually even need to) look for the character named Diva.
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I have seen similar effects in my large farm tunnels and even in my hallways, it seeems that the colonists prefer to stagger around as though they are drunk
I will check this out when i get home.
Thanks for reporting.