MAGETWO-44351: Gallery image sliding opens full-screen mode after mouse up event

Author: slopok

lib/web/mage/gallery/gallery.js

@@ -90,13 +90,15 @@ define([
             this.initApi();
             this.setupBreakpoints();
             this.initFullscreenSettings();
-            this.settings.$element.on('click', '.fotorama__stage__frame', function () {
-                $('[data-gallery-role="gallery"]').data('fotorama').requestFullScreen();
-                $('[data-gallery-role="fotorama__fullscreen-icon"]').css({
-                    opacity: 1,
-                    visibility: 'visible',
-                    display: 'block'
-                });
+            this.settings.$element.on('mouseup', '.fotorama__stage__frame', function () {
+                if (!$(this).parents('.fotorama__shadows--left').length) {
+                    $('[data-gallery-role="gallery"]').data('fotorama').requestFullScreen();
+                    $('[data-gallery-role="fotorama__fullscreen-icon"]').css({
+                        opacity: 1,
+                        visibility: 'visible',
+                        display: 'block'
+                    });
+                }
             });
         },