diff --git a/front/src/Components/EmbedScreens/CamerasContainer.svelte b/front/src/Components/EmbedScreens/CamerasContainer.svelte
index 208ae529..6b4382d9 100644
--- a/front/src/Components/EmbedScreens/CamerasContainer.svelte
+++ b/front/src/Components/EmbedScreens/CamerasContainer.svelte
@@ -3,7 +3,7 @@
     import { streamableCollectionStore } from "../../Stores/StreamableCollectionStore";
     import MediaBox from "../Video/MediaBox.svelte";
 
-    export let highlightedEmbedScreen: EmbedScreen | null;
+    export let highlightedEmbedScreen: EmbedScreen | undefined;
     export let full = false;
     $: clickable = !full;
 </script>
diff --git a/front/src/Components/EmbedScreens/CoWebsiteThumbnailSlot.svelte b/front/src/Components/EmbedScreens/CoWebsiteThumbnailSlot.svelte
index b01dbf0a..e7345223 100644
--- a/front/src/Components/EmbedScreens/CoWebsiteThumbnailSlot.svelte
+++ b/front/src/Components/EmbedScreens/CoWebsiteThumbnailSlot.svelte
@@ -73,9 +73,9 @@
             $mainCoWebsite !== undefined &&
             $mainCoWebsite.getId() === coWebsite.getId();
         isHighlight =
-            $highlightedEmbedScreen !== null &&
-            $highlightedEmbedScreen.type === "cowebsite" &&
-            $highlightedEmbedScreen.embed.getId() === coWebsite.getId();
+            $highlightedEmbedScreen !== undefined &&
+            $highlightedEmbedScreen?.type === "cowebsite" &&
+            $highlightedEmbedScreen?.embed.getId() === coWebsite.getId();
     }
 </script>
 
diff --git a/front/src/Stores/EmbedScreensStore.ts b/front/src/Stores/EmbedScreensStore.ts
index 724733b3..172ec45b 100644
--- a/front/src/Stores/EmbedScreensStore.ts
+++ b/front/src/Stores/EmbedScreensStore.ts
@@ -15,7 +15,7 @@ export type EmbedScreen =
       };
 
 function createHighlightedEmbedScreenStore() {
-    const { subscribe, set, update } = writable<EmbedScreen | null>(null);
+    const { subscribe, set, update } = writable<EmbedScreen | undefined>(undefined);
 
     return {
         subscribe,
@@ -23,7 +23,7 @@ function createHighlightedEmbedScreenStore() {
             set(embedScreen);
         },
         removeHighlight: () => {
-            set(null);
+            set(undefined);
         },
         toggleHighlight: (embedScreen: EmbedScreen) => {
             update((currentEmbedScreen) =>
@@ -36,7 +36,7 @@ function createHighlightedEmbedScreenStore() {
                     currentEmbedScreen.type === "streamable" &&
                     embedScreen.embed.uniqueId !== currentEmbedScreen.embed.uniqueId)
                     ? embedScreen
-                    : null
+                    : undefined
             );
         },
     };
diff --git a/front/src/WebRtc/CoWebsiteManager.ts b/front/src/WebRtc/CoWebsiteManager.ts
index 5a3585f6..a33432dc 100644
--- a/front/src/WebRtc/CoWebsiteManager.ts
+++ b/front/src/WebRtc/CoWebsiteManager.ts
@@ -561,6 +561,13 @@ class CoWebsiteManager {
         coWebsites.remove(coWebsite);
         coWebsites.add(coWebsite, 0);
 
+        if (mainCoWebsite) {
+            const iframe = mainCoWebsite.getIframe();
+            if (iframe) {
+                iframe.style.display = "block";
+            }
+        }
+
         if (
             isMediaBreakpointDown("lg") &&
             get(embedScreenLayout) === LayoutMode.Presentation &&