[MERGE] forward port branch 13.0 up to f4105eb9c70

1 files changed, 1 insertions, 1 deletions

diff --git a/addons/mail/static/src/js/services/mail_document_thread_manager.js b/addons/mail/static/src/js/services/mail_document_thread_manager.js
index 6bb66b1b439..652567baf14 100644
--- a/addons/mail/static/src/js/services/mail_document_thread_manager.js
+++ b/addons/mail/static/src/js/services/mail_document_thread_manager.js
@@ -34,7 +34,7 @@ MailManager.include({
                     this.call('local_storage', 'getItem', key);
             }
         }
-        this.isReady().then(this._updateDocumentThreadWindows.bind(this, this._documentThreadWindowStates));
+        this._mailBus.on('messaging_ready', this, this._updateDocumentThreadWindows.bind(this, this._documentThreadWindowStates));
         // listen to localStorage changes to synchronize DocumentThread's
         // windows between tabs
         this.call('local_storage', 'onStorage', this, this._onStorage);