diff --git a/packages/block-library/src/quote/theme.scss b/packages/block-library/src/quote/theme.scss
index 2c5983003986a1..24068d36b82e6c 100644
--- a/packages/block-library/src/quote/theme.scss
+++ b/packages/block-library/src/quote/theme.scss
@@ -21,7 +21,7 @@
 		border: none;
 		padding-left: 0;
 	}
-	// .is-style-large and .is-large are kept for backwards compatibility.
+	// .is-style-plain, .is-style-large and .is-large are kept for backwards compatibility.
 	// They are not wrapped in `:where()` to keep specificity as it was before
 	// they were deprecated.
 	&:where(.is-style-plain),
diff --git a/test/e2e/specs/editor/various/patterns.spec.js b/test/e2e/specs/editor/various/patterns.spec.js
index ba9f851b4ed531..30dc71114b93f3 100644
--- a/test/e2e/specs/editor/various/patterns.spec.js
+++ b/test/e2e/specs/editor/various/patterns.spec.js
@@ -600,6 +600,15 @@ test.describe( 'Synced pattern', () => {
 			editor.canvas.getByRole( 'document', { name: 'Block: Quote' } )
 		);
 
+		// The quote block should have a visible preview in the sidebar for this test to be valid.
+		await expect(
+			page
+				.getByRole( 'region', { name: 'Editor settings' } )
+				.getByRole( 'button', { name: 'Styles', exact: true } )
+		).toBeVisible();
+
+		await page.click( 'role=menuitem[name="Plain Style"i]' ); // Update the selector based on UI changes.
+
 		await editor.clickBlockOptionsMenuItem( 'Create pattern' );
 
 		const createPatternDialog = editor.page.getByRole( 'dialog', {