I have problem to surf correctly https://www.gazzetta.it
Waterfox (last version, 56.2.10) displays only the first image, not the header with videos and the lower images.
No problem with Edge and Chrome.
Waterfox 56.2.10 on FreeBSD-CURRENT, normal mode (various extensions):

ReferenceError: event is not defined
ReferenceError: utag is not defined
TypeError: RcsOrchestrator is not a constructor
ReferenceError: callReviZoneId is not defined
Safe mode:

Falkon:



@Lorienna thanks, this also helps at https://github.com/MrAlex94/Waterfox/issues/1002#issuecomment-498455149
@grahamperrin You're welcome. The site now works fine with Waterfox 56.2.10 by default:

Most helpful comment
dom.moduleScripts.enabled = false
dom.moduleScripts.enabled = true