diff --git a/src/Umbraco.Web.UI.Client/src/packages/core/property/property/property.element.ts b/src/Umbraco.Web.UI.Client/src/packages/core/property/property/property.element.ts
index d46effae08..a5bb1a0838 100644
--- a/src/Umbraco.Web.UI.Client/src/packages/core/property/property/property.element.ts
+++ b/src/Umbraco.Web.UI.Client/src/packages/core/property/property/property.element.ts
@@ -75,7 +75,7 @@ export class UmbPropertyElement extends UmbLitElement {
 	 */
 	@property({ type: String })
 	public set alias(alias: string) {
-		this.setAttribute(UMB_MARK_ATTRIBUTE_NAME, 'property/' + alias);
+		this.setAttribute(UMB_MARK_ATTRIBUTE_NAME, 'property:' + alias);
 		this.#propertyContext.setAlias(alias);
 	}
 	public get alias() {
diff --git a/src/Umbraco.Web.UI.Client/src/packages/core/section/section-default.element.ts b/src/Umbraco.Web.UI.Client/src/packages/core/section/section-default.element.ts
index f7453c4463..ac4ca73978 100644
--- a/src/Umbraco.Web.UI.Client/src/packages/core/section/section-default.element.ts
+++ b/src/Umbraco.Web.UI.Client/src/packages/core/section/section-default.element.ts
@@ -51,7 +51,7 @@ export class UmbSectionDefaultElement extends UmbLitElement implements UmbSectio
 		new UmbExtensionsElementInitializer(this, umbExtensionsRegistry, 'sectionSidebarApp', null, (sidebarApps) => {
 			const oldValue = this._sidebarApps;
 			sidebarApps.forEach((sidebarApp) => {
-				sidebarApp.component?.setAttribute(UMB_MARK_ATTRIBUTE_NAME, 'section-sidebar/' + sidebarApp.manifest.alias);
+				sidebarApp.component?.setAttribute(UMB_MARK_ATTRIBUTE_NAME, 'section-sidebar:' + sidebarApp.manifest.alias);
 			});
 			this._sidebarApps = sidebarApps;
 			this.requestUpdate('_sidebarApps', oldValue);
diff --git a/src/Umbraco.Web.UI.Client/src/packages/core/workspace/components/workspace-split-view/workspace-split-view.context.ts b/src/Umbraco.Web.UI.Client/src/packages/core/workspace/components/workspace-split-view/workspace-split-view.context.ts
index d7bb76503a..2267572483 100644
--- a/src/Umbraco.Web.UI.Client/src/packages/core/workspace/components/workspace-split-view/workspace-split-view.context.ts
+++ b/src/Umbraco.Web.UI.Client/src/packages/core/workspace/components/workspace-split-view/workspace-split-view.context.ts
@@ -48,7 +48,7 @@ export class UmbWorkspaceSplitViewContext extends UmbContextBase<UmbWorkspaceSpl
 				this.#datasetContext?.destroy();
 				const variantId = UmbVariantId.Create(activeVariantInfo);
 				this.#datasetContext = this.#workspaceContext?.createPropertyDatasetContext(this, variantId);
-				this.getHostElement().setAttribute(UMB_MARK_ATTRIBUTE_NAME, 'workspace-split-view/' + variantId.toString());
+				this.getHostElement().setAttribute(UMB_MARK_ATTRIBUTE_NAME, 'workspace-split-view:' + variantId.toString());
 			},
 			'_observeActiveVariant',
 		);