The disambiguation detector is turned off when I enter the visual editor. It would help eliminating links to disambiguation pages if, when entering the visual editor, those links where kept with a yellow background.
Topic on VisualEditor/Feedback
VisualEditor has its own disambiguation and redirect detector built into the link tool. Which tool are you talking about?
Maybe it is w:pt:MediaWiki:Gadget-desambiguacoes.js?
Yes, its the gadget described here: https://pt.wikipedia.org/wiki/Wikip%C3%A9dia:Detector_de_desambigua%C3%A7%C3%B5es Or, in english, here: https://en.wikipedia.org/wiki/Wikipedia:Disambiguation_detector
But, surplisingly, it doesn't appear in the english wikipedia preferences page, only in portuguese.