Fix data widget not refreshing

core/modules/widgets/data.js

@@ -134,10 +134,10 @@ DataWidget.prototype.extractCompoundTiddler = function(title) {
 Selectively refreshes the widget if needed. Returns true if the widget or any of its children needed re-rendering
 */
 DataWidget.prototype.refresh = function(changedTiddlers) {
-	// Refresh our attributes
-	var changedAttributes = this.computeAttributes();
-	// Refresh our children, and indicate that we refreshed if any of our attribute values have changed
-	return this.refreshChildren(changedTiddlers) || $tw.utils.count(changedAttributes) > 0;
+	// It would be expensive to calculate whether the changedTiddlers impact the filter
+	// identified by the $filter attribute so we just refresh ourselves unconditionally
+	this.refreshSelf();
+	return true;
 };
 
 exports.data = DataWidget;

editions/tw5.com/tiddlers/testcases/DataWidget/Refreshing.tid

@@ -0,0 +1,26 @@
+title: TestCases/DataWidget/Refreshing
+type: text/vnd.tiddlywiki-multiple
+tags: [[$:/tags/wiki-test-spec]]
+description: Refreshing the data widget
+display-format: plaintext
+
+title: Output
+
+<$data title="Epsilon" text={{Subject}}/>
++
+title: Subject
+
+Nothing
++
+title: Actions
+
+<$action-setfield $tiddler="Subject" text="Theta"/>
++
+title: ExpectedResult
+
+<p>[
+    {
+        "title": "Epsilon",
+        "text": "Theta"
+    }
+]</p>