Bug 18314.

apps/documenteditor/main/app/controller/Main.js

@@ -772,12 +772,11 @@ define([
 
                         if (tips.length) me.showTips(tips);
                     }
+                    document.removeEventListener('visibilitychange', checkWarns);
                 }
 
                 if (typeof document.hidden !== 'undefined' && document.hidden) {
-                    document.addEventListener('visibilitychange', function() {
-                        setTimeout(checkWarns, 50);
-                    });
+                    document.addEventListener('visibilitychange', checkWarns);
                 } else checkWarns();
 
                 me.api.asc_registerCallback('asc_onStartAction',            _.bind(me.onLongActionBegin, me));

apps/presentationeditor/main/app/controller/Main.js

@@ -551,8 +551,7 @@ define([
                     return;
 
                 var me = this,
-                    value,
-                    tips = [];
+                    value;
 
                 me._isDocReady = true;
 
@@ -564,12 +563,20 @@ define([
                 var zf = (value!==null) ? parseInt(value) : -1;
                 (zf == -1) ? this.api.zoomFitToPage() : this.api.zoom(zf);
 
+                function checkWarns() {
                     if (!window['AscDesktopEditor']) {
+                        var tips = [];
                         Common.Utils.isIE9m && tips.push(me.warnBrowserIE9);
                         !Common.Utils.isGecko && (Math.abs(me.getBrowseZoomLevel() - 1) > 0.1) && tips.push(Common.Utils.String.platformKey(me.warnBrowserZoom, '{0}'));
 
                         if (tips.length) me.showTips(tips);
                     }
+                    document.removeEventListener('visibilitychange', checkWarns);
+                }
+
+                if (typeof document.hidden !== 'undefined' && document.hidden) {
+                    document.addEventListener('visibilitychange', checkWarns);
+                } else checkWarns();
 
                 me.api.asc_registerCallback('asc_onStartAction',            _.bind(me.onLongActionBegin, me));
                 me.api.asc_registerCallback('asc_onEndAction',              _.bind(me.onLongActionEnd, me));

apps/spreadsheeteditor/main/app/controller/Main.js

@@ -540,8 +540,7 @@ define([
                     return;
 
                 var me = this,
-                    value,
-                    tips = [];
+                    value;
 
                 me._isDocReady = true;
 
@@ -667,15 +666,21 @@ define([
                 $(document).on('contextmenu', _.bind(me.onContextMenu, me));
 //                    me.getViewport().getEl().un('keypress', me.lockEscapeKey, me);
 
+                function checkWarns() {
                     if (!window['AscDesktopEditor']) {
+                        var tips = [];
                         Common.Utils.isIE9m && tips.push(me.warnBrowserIE9);
-                    !Common.Utils.isGecko &&
-                        !me.appOptions.isEditMailMerge && !me.appOptions.isEditDiagram &&
-                            !me.appOptions.nativeApp &&
+                        !Common.Utils.isGecko && !me.appOptions.isEditMailMerge && !me.appOptions.isEditDiagram && !me.appOptions.nativeApp &&
                         (Math.abs(me.getBrowseZoomLevel() - 1) > 0.1) && tips.push(Common.Utils.String.platformKey(me.warnBrowserZoom, '{0}'));
 
                         if (tips.length) me.showTips(tips);
                     }
+                    document.removeEventListener('visibilitychange', checkWarns);
+                }
+
+                if (typeof document.hidden !== 'undefined' && document.hidden) {
+                    document.addEventListener('visibilitychange', checkWarns);
+                } else checkWarns();
 
                 if (this._state.licenseWarning) {
                     value = Common.localStorage.getItem("de-license-warning");