Hello again i found a bug with envira gallery . I create a thumbnails gallery in one page and for every thumbnails have attached page to another page where have more photos. When click image this open the page in the current window in browser. Ok but when this is opened and get back to prevision page , envira gallery open lightbox this is not normal. I try in clean wordpress install with base theme and without any plugins and again this problem is online. I attached video link to my post please watch it to see the problem .