Backspace key trigger navigating back

Hi, in grapesjs in Firefox 75.0 when "backspace key" (event.which === 8) is pressed the navigator is going back and grapesjs is lost. To reproduce it: Open Firefox browser Open URL: https://grapesjs.com/ Click on: "Newsletter Demo" buttom Delete a element from editor usign "backspace key" (NOT using supr key) The behavior is: the navagator is going back and the editor is lost. I am trying this but it doesn't work: $document.on('keydown', function(e){ if(e.which === 8){ // you can add others here inside brackets. e.preventDefault(); e.stopPropagation(); } }); i can do something over/inside edi...