I did not know this. I wonder how useful it could be. Perhaps you can make items that expand the children when you click the item link text instead of trying to pinpoint the little zoom button. Or run those “powerpack” things or item sorting scripts via links without any plugins. I’m just hypothesizing.
Anyway here is proof: this worked for me, just the standard share bookmarklet from facebook
[a test](javascript:var d=document,f='https://www.facebook.com/share',l=d.location,e=encodeURIComponent,p='.php?src=bm&v=4&i=1531940155&u='+e(l.href)+'&t='+e(d.title);1;try{if (!/^(.*\.)?facebook\.[^.]*$/.test(l.host))throw(0);share_internal_bookmarklet(p)}catch(z) {a=function() {if (!window.open(f+'r'+p,'sharer','toolbar=0,status=0,resizable=1,width=626,height=436'))l.href=f+p};if (/Firefox/.test(navigator.userAgent))setTimeout(a,0);else{a()}}void(0))