fateh78 wrote:i solved
do not ask me how i make that
in short, i used chrome remote debugging to debug page on mobile :
https://developers.google.com/web/tools/chrome-devtools/remote-debugging
then read this page :
https://developers.google.com/web/updates/2017/01/scrolling-intervention
blablabla : go to jquery.fastclick.min.js and change a.addEventListener("touchstart",this.onTouchStart, !1) to be like this :
a.addEventListener("touchstart",this.onTouchStart, {passive: True})
do not forget to to clear browser cash to reload the new version of file
best regards everybody
You're a master "fateh78", Thank you for you contribution, it was very usefull.
Now combobox and similaries work on mobile.