ReferenceError on "jump to paragraph/heading"

[bickxsler]

Every time I try to use [p / ]p / [h / ]h I get this ReferenceError:

resource://dactyl/buffer.jsm: 1114: ReferenceError: e is not defined

This occurs on any website, crucially on sites that certainly have <h*> and <p> elements that ought to be jumpable to. Other commands listed under "Jumping to Elements" in dactyl://help/buffer, like [[, ]], and gi work fine, though I reckon that's not relevant.

This has been happening since I first tried these commands a few months ago, but I'm currently using:

:version
Pentadactyl 7287 (created 2016/08/08 00:07:37) running on:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.11; rv:48.0) Gecko/20100101 Firefox/48.0