mousedown mouseup not working on vis

hi i have a problem with the use of mousedown and mouseup event in vis timeline....this is a simple example of my code....(the timeline is inside the div visualization)

$("#visualization").on("mousedown", function1); function function1(e) { console.log("mouseDown"); };

the strange thing is that click event works fine and that 1 month ago mousedown events works fine too. I don't know what do because mousedown and click are differente event and i can't use mouseup with click....please help me to figure out