I believe the title is self explanatory, according to:
https://github.com/gorhill/uBlock/wiki/Dashboard:-Settings#disable-hyperlink-auditingbeacon
this check box option is supposed to disable beacon.enabled option in Firefox -> about:config
How ever it doesn't have an effect on that option which is set to TRUE by default.
uBO version is: 1.9.16
Other firefox add ons are: noscript and HTTPS everywhere.
Firefox version is 45.5.0 from Debian repo.