diff --git a/includes/specialpage/SpecialPageFactory.php b/includes/specialpage/SpecialPageFactory.php
index 013ceb24e5a..b91273a6946 100644
--- a/includes/specialpage/SpecialPageFactory.php
+++ b/includes/specialpage/SpecialPageFactory.php
@@ -606,6 +606,9 @@ class SpecialPageFactory {
 			'user' => $main->getUser(),
 			'language' => $main->getLanguage(),
 		];
+		if ( $main->canUseWikiPage() ) {
+			$ctx['wikipage'] = $main->getWikiPage();
+		}
 
 		// Override
 		$wgTitle = $title;
@@ -633,6 +636,9 @@ class SpecialPageFactory {
 		$main->setRequest( $ctx['request'] );
 		$main->setUser( $ctx['user'] );
 		$main->setLanguage( $ctx['language'] );
+		if ( isset( $ctx['wikipage'] ) ) {
+			$main->setWikiPage( $ctx['wikipage'] );
+		}
 
 		return $ret;
 	}
diff --git a/tests/phpunit/includes/ExtraParserTest.php b/tests/phpunit/includes/ExtraParserTest.php
index 7ce4d1efc6a..fc317b71980 100644
--- a/tests/phpunit/includes/ExtraParserTest.php
+++ b/tests/phpunit/includes/ExtraParserTest.php
@@ -46,6 +46,25 @@ class ExtraParserTest extends MediaWikiTestCase {
 			$this->parser->parse( $longLine, $title, $options )->getText( [ 'unwrap' => true ] ) );
 	}
 
+	/**
+	 * @covers Parser::braceSubstitution
+	 * @covers SpecialPageFactory::capturePath
+	 */
+	public function testSpecialPageTransclusionRestoresGlobalState() {
+		$text = "{{Special:ApiHelp/help}}";
+		$title = Title::newFromText( 'testSpecialPageTransclusionRestoresGlobalState' );
+		$options = ParserOptions::newFromUser( new User() );
+
+		RequestContext::getMain()->setTitle( $title );
+		RequestContext::getMain()->getWikiPage()->CustomTestProp = true;
+
+		$parsed = $this->parser->parse( $text, $title, $options )->getText();
+		$this->assertContains( 'apihelp-header', $parsed );
+
+		// Verify that this property wasn't wiped out by the parse
+		$this->assertTrue( RequestContext::getMain()->getWikiPage()->CustomTestProp );
+	}
+
 	/**
 	 * Test the parser entry points
 	 * @covers Parser::parse