always allow editing invariant properties

src/Umbraco.Web.UI.Client/src/packages/core/property/property/property.context.ts

@@ -111,6 +111,15 @@ export class UmbPropertyContext<ValueType = any> extends UmbContextBase<UmbPrope
 		);
 
 		this.observe(this.#datasetContext.currentVariantCultureIsReadOnly, (value) => {
+			// always allow invariant properties to be editable
+			const isInvariant = !this.#variantId?.getValue()?.culture;
+
+			// always allow editing invariant properties
+			if (isInvariant) {
+				this.#isReadOnly.setValue(false);
+				return;
+			}
+
 			this.#isReadOnly.setValue(value);
 		});
 	}