diff --git a/docs/how-to-guides/themes/global-settings-and-styles.md b/docs/how-to-guides/themes/global-settings-and-styles.md
index 205a3ee862ce6b..ecd5716cf4f190 100644
--- a/docs/how-to-guides/themes/global-settings-and-styles.md
+++ b/docs/how-to-guides/themes/global-settings-and-styles.md
@@ -1057,35 +1057,6 @@ A block can have a "style variation," as defined in the [block.json specificatio
 
 Note that variations are a "block concept"—they only exist when bound to blocks. The `theme.json` specification respects this distinction by only allowing `variations` at the block level, not the top level. It’s also worth highlighting that only variations defined in the `block.json` file of the block or via `register_block_style` on the server are considered "registered" for `theme.json` styling purposes.
 
-For example, this is how to provide styles for the existing `plain` variation for the `core/quote` block:
-
-```json
-{
-	"version": 3,
-	"styles": {
-		"blocks": {
-			"core/quote": {
-				"variations": {
-					"plain": {
-						"color": {
-							"background": "red"
-						}
-					}
-				}
-			}
-		}
-	}
-}
-```
-
-The resulting CSS output is:
-
-```css
-.wp-block-quote.is-style-plain {
-	background-color: red;
-}
-```
-
 It is also possible for multiple block types to share the same variation styles. There are two recommended ways to define such shared styles:
 
 1. `theme.json` partial files
diff --git a/packages/block-library/src/quote/theme.scss b/packages/block-library/src/quote/theme.scss
index 24068d36b82e6c..441b5f3d55cf13 100644
--- a/packages/block-library/src/quote/theme.scss
+++ b/packages/block-library/src/quote/theme.scss
@@ -21,9 +21,10 @@
 		border: none;
 		padding-left: 0;
 	}
-	// .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.
+	// The following classes are kept for backward compatibility:
+	// - .is-style-plain (deprecated)
+	// - .is-style-large
+	// - .is-large
 	&:where(.is-style-plain),
 	&.is-style-large,
 	&.is-large {
diff --git a/test/e2e/specs/editor/various/patterns.spec.js b/test/e2e/specs/editor/various/patterns.spec.js
index 16f04f09a073d3..4b0a1a831242e9 100644
--- a/test/e2e/specs/editor/various/patterns.spec.js
+++ b/test/e2e/specs/editor/various/patterns.spec.js
@@ -600,13 +600,6 @@ 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' );
diff --git a/test/e2e/specs/editor/various/style-variation.spec.js b/test/e2e/specs/editor/various/style-variation.spec.js
index 136b8284b1ecff..f334c0907bc655 100644
--- a/test/e2e/specs/editor/various/style-variation.spec.js
+++ b/test/e2e/specs/editor/various/style-variation.spec.js
@@ -7,7 +7,6 @@ test.describe( 'adding blocks', () => {
 	test( 'Should switch to the plain style of the quote block', async ( {
 		admin,
 		editor,
-		page,
 	} ) => {
 		await admin.createNewPost();
 
@@ -17,10 +16,6 @@ test.describe( 'adding blocks', () => {
 			attributes: { value: '<p>Quote content</p>' },
 		} );
 
-		await editor.clickBlockToolbarButton( 'Quote' );
-
-		await page.click( 'role=menuitem[name="Plain"i]' );
-
 		// Check the content
 		const content = await editor.getEditedPostContent();
 		expect( content ).toBe(
@@ -31,4 +26,12 @@ test.describe( 'adding blocks', () => {
 <!-- /wp:quote -->`
 		);
 	} );
+
+	test( 'Should render the Quote block without style variations', async ( {
+		editor,
+	} ) => {
+		await editor.insertBlock( { name: 'core/quote' } );
+		const quoteBlock = await editor.getBlock( 'core/quote' );
+		expect( quoteBlock ).toBeTruthy(); // Verify the block is inserted
+	} );
 } );