Back and forward bug

• load a page
• click browser back button
• click browser forward button

then i see double every javascript enhanced elements (example twice the drowp down field, twice the RTE...). Can anyone else reproduce this problem?

i'm using

$(document).on("pjax:end ready", function(){
 ...
}

with pjax:complete or pjax:success I don't get duplicate dropdowns, but i can't select them after going back and forth. thanks for the help!