I noticed this recently, as well. I don't know about disallowing it--but I instruct my users that there is almost never a reason to use a double click in a Tableau Dashboard. Double clicking just gets users into too many confusing situations, so I instruct them to stick to single clicks. Its a tough habit to break people of, though, and I certainly am curious about whether or not this can be restricted.
Thanks Matthew, in that case I will leave a note instructing people to single click.
Currently, there is no option or workaround available to disable the "double-click zoom" feature in Tableau.
I agree, it is unnecessarily confusing to the end user, and the best we can do now is advise our end users that there is almost never a reason to use a double click in a Tableau Dashboard.
I highly recommend people go to this link and “upvote" for this feature: