Pretty sure this was added in, intentionally or otherwise, with the way drinking is handled when the whole "drink while running" bit was changed a bit ago. At this point, I'd call it a feature, too, given that change. But to say "this should be added to the standard client as an automation" when it effectively already is, as any time you're working and you run out of stamina, you auto-drink from a hotkeyed vessel. It's not quite the same.
I'm sure it could be decoupled from the moving bit, but should it? Or are you just being stubborn, shubla?