Try this.
It has to do with the URI Encoding getting mixed up with the mod_rewrite…
the part where it says u='+e(l.href)+'
change it to u='+e(l.href.replace(/\//g,'\\/'))+'
so my ‘Press This’ code would be
javascript:var d=document,w=window,e=w.getSelection,k=d.getSelection,x=d.selection,s=(e?e():(k)?k():(x?x.createRange().text:0)),f='https://wealthhack.com/wp-admin/press-this.php',l=d.location,e=encodeURIComponent,g=f+'?u='+e(l.href.replace(/\//g,'\\/'))+'&t='+e(d.title)+'&s='+e(s)+'&v=2';function a(){if(!w.open(g,'t','toolbar=0,resizable=0,scrollbars=1,status=1,width=720,height=570')){l.href=g;}}a();void(0);
For my blog WealthHack.com your blog wil have your domain in the Press This link.