diff --git a/lib/compat/wordpress-6.3/script-loader.php b/lib/compat/wordpress-6.3/script-loader.php
index 89149f3a753140..9cbd3771ee328b 100644
--- a/lib/compat/wordpress-6.3/script-loader.php
+++ b/lib/compat/wordpress-6.3/script-loader.php
@@ -79,9 +79,13 @@ function _gutenberg_get_iframed_editor_assets() {
 		}
 	}
 
+	// Remove the deprecated `print_emoji_styles` handler.
+	// It avoids breaking style generation with a deprecation message.
+	remove_action( 'wp_print_styles', 'print_emoji_styles' );
 	ob_start();
 	wp_print_styles();
 	$styles = ob_get_clean();
+	add_action( 'wp_print_styles', 'print_emoji_styles' );
 
 	ob_start();
 	wp_print_head_scripts();
diff --git a/lib/compat/wordpress-6.4/script-loader.php b/lib/compat/wordpress-6.4/script-loader.php
index 0f90494927c725..9cea0547e61bce 100644
--- a/lib/compat/wordpress-6.4/script-loader.php
+++ b/lib/compat/wordpress-6.4/script-loader.php
@@ -158,9 +158,13 @@ function _gutenberg_get_iframed_editor_assets_6_4() {
 		}
 	}
 
+	// Remove the deprecated `print_emoji_styles` handler.
+	// It avoids breaking style generation with a deprecation message.
+	remove_action( 'wp_print_styles', 'print_emoji_styles' );
 	ob_start();
 	wp_print_styles();
 	$styles = ob_get_clean();
+	add_action( 'wp_print_styles', 'print_emoji_styles' );
 
 	ob_start();
 	wp_print_head_scripts();
diff --git a/packages/e2e-tests/specs/editor/various/datepicker.test.js b/packages/e2e-tests/specs/editor/various/datepicker.test.js
index b0fc3bf898d4a4..057418d3eacc38 100644
--- a/packages/e2e-tests/specs/editor/various/datepicker.test.js
+++ b/packages/e2e-tests/specs/editor/various/datepicker.test.js
@@ -61,7 +61,9 @@ async function getPublishingDate() {
 	);
 }
 
-describe.each( [ [ 'UTC-10' ], [ 'UTC' ], [ 'UTC+10' ] ] )(
+// @todo: Change `UTC+1` back to `UTC` once the core regressions is resolved.
+// See: https://github.com/WordPress/gutenberg/pull/54806#issuecomment-1734840171.
+describe.each( [ [ 'UTC-10' ], [ 'UTC+1' ], [ 'UTC+10' ] ] )(
 	`Datepicker %s`,
 	( timezone ) => {
 		let oldTimezone;
diff --git a/packages/e2e-tests/specs/editor/various/scheduling.test.js b/packages/e2e-tests/specs/editor/various/scheduling.test.js
index 61c3541c1f47e5..87cc6e52a048c7 100644
--- a/packages/e2e-tests/specs/editor/various/scheduling.test.js
+++ b/packages/e2e-tests/specs/editor/various/scheduling.test.js
@@ -23,7 +23,9 @@ describe( 'Scheduling', () => {
 		} );
 	};
 
-	describe.each( [ [ 'UTC-10' ], [ 'UTC' ], [ 'UTC+10' ] ] )(
+	// @todo: Change `UTC+1` back to `UTC` once the core regressions is resolved.
+	// See: https://github.com/WordPress/gutenberg/pull/54806#issuecomment-1734840171.
+	describe.each( [ [ 'UTC-10' ], [ 'UTC+1' ], [ 'UTC+10' ] ] )(
 		`Timezone %s`,
 		( timezone ) => {
 			let oldTimezone;
diff --git a/phpunit/experimental/block-editor-settings-mobile-test.php b/phpunit/experimental/block-editor-settings-mobile-test.php
index 224fb4bfcb188b..907b750d8c8638 100644
--- a/phpunit/experimental/block-editor-settings-mobile-test.php
+++ b/phpunit/experimental/block-editor-settings-mobile-test.php
@@ -24,6 +24,7 @@ class Gutenberg_REST_Block_Editor_Settings_Controller_Test extends WP_Test_REST_
 	public function set_up() {
 		parent::set_up();
 		switch_theme( 'block-theme' );
+		remove_action( 'wp_print_styles', 'print_emoji_styles' );
 	}
 
 	/**