diff --git a/includes/DiscussionParser.php b/includes/DiscussionParser.php
index a8f1a54ee..86bbd46fe 100644
--- a/includes/DiscussionParser.php
+++ b/includes/DiscussionParser.php
@@ -1239,13 +1239,14 @@ abstract class EchoDiscussionParser {
 	 * @param Language $lang
 	 * @param int $length Length in characters (not bytes); default DEFAULT_SNIPPET_LENGTH
 	 * @param Title|null $title Page from which the text snippet is being extracted
+	 * @param bool $linestart Whether or not this is at the start of a line
 	 * @return string
 	 */
 	public static function getTextSnippet(
-		$text, Language $lang, $length = self::DEFAULT_SNIPPET_LENGTH, $title = null
+		$text, Language $lang, $length = self::DEFAULT_SNIPPET_LENGTH, $title = null, $linestart = true
 	) {
 		// Parse wikitext
-		$html = MediaWikiServices::getInstance()->getMessageCache()->parse( $text, $title )->getText( [
+		$html = MediaWikiServices::getInstance()->getMessageCache()->parse( $text, $title, $linestart )->getText( [
 			'enableSectionEditLinks' => false
 		] );
 		$plaintext = trim( Sanitizer::stripAllTags( $html ) );
diff --git a/includes/formatters/PresentationModelSection.php b/includes/formatters/PresentationModelSection.php
index 94ca5948e..4d55c001c 100644
--- a/includes/formatters/PresentationModelSection.php
+++ b/includes/formatters/PresentationModelSection.php
@@ -83,7 +83,10 @@ class EchoPresentationModelSection {
 			$rawSectionTitle,
 			$this->language,
 			EchoDiscussionParser::DEFAULT_SNIPPET_LENGTH,
-			$this->event->getTitle()
+			$this->event->getTitle(),
+			// linestart=false, because this wikitext was inside a heading like `== … ==`,
+			// so start-of-line markup like `*` should not be parsed (T299572)
+			false
 		);
 		return $this->parsedSectionTitle;
 	}
diff --git a/tests/phpunit/DiscussionParserTest.php b/tests/phpunit/DiscussionParserTest.php
index 97c4dced5..a2076ee93 100644
--- a/tests/phpunit/DiscussionParserTest.php
+++ b/tests/phpunit/DiscussionParserTest.php
@@ -1816,5 +1816,25 @@ TEXT
 				Title::newFromText( 'Page001' )
 			)
 		);
+		$this->assertEquals(
+			'Hello',
+			EchoDiscussionParser::getTextSnippet(
+				'* Hello',
+				Language::factory( 'en' ),
+				EchoDiscussionParser::DEFAULT_SNIPPET_LENGTH,
+				null,
+				true
+			)
+		);
+		$this->assertEquals(
+			'* Hello',
+			EchoDiscussionParser::getTextSnippet(
+				'* Hello',
+				Language::factory( 'en' ),
+				EchoDiscussionParser::DEFAULT_SNIPPET_LENGTH,
+				null,
+				false
+			)
+		);
 	}
 }