diff --git a/frontend/app/player/web/managers/DOM/DOMManager.ts b/frontend/app/player/web/managers/DOM/DOMManager.ts
index 76e194916..d6c666548 100644
--- a/frontend/app/player/web/managers/DOM/DOMManager.ts
+++ b/frontend/app/player/web/managers/DOM/DOMManager.ts
@@ -449,9 +449,8 @@ export default class DOMManager extends ListWalker<Message> {
           logger.error('CreateIFrameDocument: Node not found', msg);
           return;
         }
-
-        // shadow DOM for a custom element
-        const isCustomElement = vElem.tagName.includes('-');
+        // shadow DOM for a custom element + SALESFORCE (<slot>)
+        const isCustomElement = vElem.tagName.includes('-') || vElem.tagName === 'SLOT';
         const isNotActualIframe = !["IFRAME", "FRAME"].includes(vElem.tagName.toUpperCase());
         const isLikelyShadowRoot = isCustomElement && isNotActualIframe;