Fix #1583: Correct cspBuffer stash html content store

CHANGE.md

@@ -5,6 +5,7 @@ Change Log: `bootstrap-fileinput`
 
 **Date:** _under development_
 
+- (bug #1583): Correct cspBuffer stash html content store.
 - (enh #1582): Set `showConsoleLogs` to `false` as default.
 - (enh #1581): Enhance Sortable Behavior & Styles.
     - Update to use latest release of Rubaxa Sortable Plugin

js/fileinput.js

@@ -516,7 +516,7 @@
                     return outerDom[itm];
                 });
                 return values.flatMap(function (elem) {
-                    return elem.outerHTML;
+                    return elem.innerHTML;
                 }).join('');
             },
             apply: function (domElement) {
@@ -2675,7 +2675,7 @@
             self._validateDefaultPreview();
         },
         _initSortable: function () {
-            var self = this, $el = self.$preview.find('>div'), settings, selector = '.' + $h.SORT_CSS,
+            var self = this, $el = self.$preview, settings, selector = '.' + $h.SORT_CSS,
                 rev = self.reversePreviewOrder, Sortable = window.Sortable;
             if (!Sortable || $el.find(selector).length === 0) {
                 return;