diff --git a/frontend/src/app/main.cljs b/frontend/src/app/main.cljs
index 870f8a82bb..7bf4afecc7 100644
--- a/frontend/src/app/main.cljs
+++ b/frontend/src/app/main.cljs
@@ -8,6 +8,8 @@
   (:require
    [app.common.data.macros :as dm]
    [app.common.logging :as log]
+   [app.common.time :as ct]
+   [app.common.transit :as t]
    [app.common.types.objects-map]
    [app.common.uuid :as uuid]
    [app.config :as cf]
@@ -100,6 +102,15 @@
 
 (defn ^:export init
   [options]
+  ;; WORKAROUND: we set this really not usefull property for signal a
+  ;; sideffect and prevent GCC remove it. We need it because we need
+  ;; to populate the Date prototype with transit related properties
+  ;; before SES hardning is applied on loading MCP plugin
+  (unchecked-set js/globalThis "penpotStartDate"
+                 (-> (ct/now)
+                     (t/encode-str)
+                     (t/decode-str)))
+
   ;; Before initializing anything, check if the browser has loaded
   ;; stale JS from a previous deployment. If so, do a hard reload so
   ;; the browser fetches fresh assets matching the current index.html.
@@ -110,7 +121,6 @@
     (do
       (some-> (unchecked-get options "defaultTranslations")
               (i18n/set-default-translations))
-
       (mw/init!)
       (i18n/init)
       (cur/init-styles)
diff --git a/frontend/src/app/util/object.cljc b/frontend/src/app/util/object.cljc
index 9ff10e7b9f..090effd710 100644
--- a/frontend/src/app/util/object.cljc
+++ b/frontend/src/app/util/object.cljc
@@ -466,17 +466,10 @@
 
 #?(:cljs
    (def Proxy
-     (let [ctor (app.util.object/class
-                 :name "Proxy"
-                 :extends js/Object
-                 :constructor (constantly nil))]
-       ;; Remove the `constructor` data property from the prototype so that
-       ;; SES `harden` (used by the plugin sandbox) does not traverse from a
-       ;; proxy instance back to this constructor function and freeze it.
-       ;; If the constructor is frozen before Transit's `typeTag` helper sets
-       ;; its cache property, Transit throws "object is not extensible".
-       (js-delete (.-prototype ctor) "constructor")
-       ctor)))
+     (app.util.object/class
+      :name "Proxy"
+      :extends js/Object
+      :constructor (constantly nil))))
 
 (defmacro reify
   "A domain specific variation of reify that creates anonymous objects