PanelPlugin: Allow inverting hideFromDefaults (#100473)

packages/grafana-data/src/panel/registryFactories.ts

@@ -55,7 +55,7 @@ export function createFieldConfigRegistry<TFieldConfigOptions>(
       const customDefault = config.standardOptions[id]?.defaultValue;
       const customSettings = config.standardOptions[id]?.settings;
 
-      if (customHideFromDefaults) {
+      if (customHideFromDefaults !== undefined) {
         fieldConfigProp = {
           ...fieldConfigProp,
           hideFromDefaults: customHideFromDefaults,

public/app/features/dashboard/components/PanelEditor/OptionsPaneOptions.test.tsx

@@ -143,6 +143,29 @@ describe('OptionsPaneOptions', () => {
     expect(screen.queryByLabelText(OptionsPaneSelector.fieldLabel('TestPanel HiddenFromDef'))).not.toBeInTheDocument();
   });
 
+  it('should render options that are specifically not marked as hidden from defaults', () => {
+    const scenario = new OptionsPaneOptionsTestScenario();
+
+    scenario.plugin = getPanelPlugin({
+      id: 'TestPanel',
+    }).useFieldConfig({
+      standardOptions: {},
+      useCustomConfig: (b) => {
+        b.addBooleanSwitch({
+          name: 'CustomBool',
+          path: 'CustomBool',
+        }).addBooleanSwitch({
+          name: 'HiddenFromDef',
+          path: 'HiddenFromDef',
+          hideFromDefaults: false,
+        });
+      },
+    });
+
+    scenario.render();
+    expect(screen.queryByLabelText(OptionsPaneSelector.fieldLabel('TestPanel HiddenFromDef'))).toBeInTheDocument();
+  });
+
   it('should create categories for field options with category', () => {
     const scenario = new OptionsPaneOptionsTestScenario();
     scenario.render();