Html5 game bug

I try to make a game in html5, but the image remain stucked on the first acces of the page (empy project)
I thinks this is caused by browser cookies, with Private Windows(Mozilla Firefox) works
Any resolve?

Try a hard refresh with Ctrl+F5 or Shift+F5 (depends on your web browser).

I recommend use Chrome for testing because it always refresh nice and have the best developer tools.