Hide floating action button on onboarding page (#16082)

app/javascript/mastodon/features/ui/components/columns_area.js

@@ -53,7 +53,7 @@ const messages = defineMessages({
   publish: { id: 'compose_form.publish', defaultMessage: 'Toot' },
 });
 
-const shouldHideFAB = path => path.match(/^\/statuses\/|^\/search|^\/getting-started/);
+const shouldHideFAB = path => path.match(/^\/statuses\/|^\/search|^\/getting-started|^\/start/);
 
 export default @(component => injectIntl(component, { withRef: true }))
 class ColumnsArea extends ImmutablePureComponent {