diff --git a/addons/web/static/lib/owl/owl.js b/addons/web/static/lib/owl/owl.js
index 23e67694fba..9efcc66f3b6 100644
--- a/addons/web/static/lib/owl/owl.js
+++ b/addons/web/static/lib/owl/owl.js
@@ -2180,7 +2180,7 @@
             if (hadKey !== hasKey) {
                 notifyReactives(target, KEYCHANGES);
             }
-            if (originalValue !== value) {
+            if (originalValue !== target[getterName](key)) {
                 notifyReactives(target, key);
             }
             return ret;
@@ -3001,15 +3001,13 @@
             keys = [...collection.keys()];
             values = [...collection.values()];
         }
+        else if (Symbol.iterator in Object(collection)) {
+            keys = [...collection];
+            values = keys;
+        }
         else if (collection && typeof collection === "object") {
-            if (Symbol.iterator in collection) {
-                keys = [...collection];
-                values = keys;
-            }
-            else {
-                values = Object.values(collection);
-                keys = Object.keys(collection);
-            }
+            values = Object.values(collection);
+            keys = Object.keys(collection);
         }
         else {
             throw new OwlError(`Invalid loop expression: "${collection}" is not iterable`);
@@ -3210,6 +3208,10 @@
         }
         addTemplate(name, template) {
             if (name in this.rawTemplates) {
+                // this check can be expensive, just silently ignore double definitions outside dev mode
+                if (!this.dev) {
+                    return;
+                }
                 const rawTemplate = this.rawTemplates[name];
                 const currentAsString = typeof rawTemplate === "string"
                     ? rawTemplate
@@ -5556,7 +5558,7 @@
     }
 
     // do not modify manually. This file is generated by the release script.
-    const version = "2.2.5";
+    const version = "2.2.6";
 
     // -----------------------------------------------------------------------------
     //  Scheduler
@@ -5645,13 +5647,8 @@
 This is not suitable for production use.
 See https://github.com/odoo/owl/blob/${hash}/doc/reference/app.md#configuration for more information.`;
     };
-    window.__OWL_DEVTOOLS__ || (window.__OWL_DEVTOOLS__ = {
-        apps: new Set(),
-        Fiber: Fiber,
-        RootFiber: RootFiber,
-        toRaw: toRaw,
-        reactive: reactive,
-    });
+    const apps = new Set();
+    window.__OWL_DEVTOOLS__ || (window.__OWL_DEVTOOLS__ = { apps, Fiber, RootFiber, toRaw, reactive });
     class App extends TemplateSet {
         constructor(Root, config = {}) {
             super(config);
@@ -5659,7 +5656,7 @@ See https://github.com/odoo/owl/blob/${hash}/doc/reference/app.md#configuration
             this.root = null;
             this.name = config.name || "";
             this.Root = Root;
-            window.__OWL_DEVTOOLS__.apps.add(this);
+            apps.add(this);
             if (config.test) {
                 this.dev = true;
             }
@@ -5716,7 +5713,7 @@ See https://github.com/odoo/owl/blob/${hash}/doc/reference/app.md#configuration
                 this.root.destroy();
                 this.scheduler.processTasks();
             }
-            window.__OWL_DEVTOOLS__.apps.delete(this);
+            apps.delete(this);
         }
         createComponent(name, isStatic, hasSlotsProp, hasDynamicPropList, propList) {
             const isDynamic = !isStatic;
@@ -5791,6 +5788,7 @@ See https://github.com/odoo/owl/blob/${hash}/doc/reference/app.md#configuration
         }
     }
     App.validateTarget = validateTarget;
+    App.apps = apps;
     App.version = version;
     async function mount(C, target, config = {}) {
         return new App(C, config).mount(target, config);
@@ -6025,8 +6023,8 @@ See https://github.com/odoo/owl/blob/${hash}/doc/reference/app.md#configuration
     Object.defineProperty(exports, '__esModule', { value: true });
 
 
-    __info__.date = '2023-08-07T10:26:30.557Z';
-    __info__.hash = 'b25e988';
+    __info__.date = '2023-09-25T11:50:11.419Z';
+    __info__.hash = '5dcee25';
     __info__.url = 'https://github.com/odoo/owl';