From 4fc79ad1f8225105dfdb065d245fa81713306819 Mon Sep 17 00:00:00 2001
From: Rick Butterfield <rcb@umbraco.dk>
Date: Fri, 31 Oct 2025 12:34:36 +0000
Subject: [PATCH] Preview: Add `allow-forms` to iframe sandbox attributes
 (#20701)

Add 'allow-forms' to iframe sandbox attributes
---
 src/Umbraco.Web.UI.Client/src/apps/preview/preview.element.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/Umbraco.Web.UI.Client/src/apps/preview/preview.element.ts b/src/Umbraco.Web.UI.Client/src/apps/preview/preview.element.ts
index e9bce3c441..81046d2e5b 100644
--- a/src/Umbraco.Web.UI.Client/src/apps/preview/preview.element.ts
+++ b/src/Umbraco.Web.UI.Client/src/apps/preview/preview.element.ts
@@ -65,7 +65,7 @@ export class UmbPreviewElement extends UmbLitElement {
 						src=${this._previewUrl}
 						title="Page preview"
 						@load=${this.#onIFrameLoad}
-						sandbox="allow-scripts allow-same-origin"></iframe>
+						sandbox="allow-scripts allow-same-origin allow-forms"></iframe>
 				</div>
 			</div>
 			<div id="menu">