diff --git a/src/node/Launcher.ts b/src/node/Launcher.ts
index 6ebe144d0cf6a..cc48c21fb7cdc 100644
--- a/src/node/Launcher.ts
+++ b/src/node/Launcher.ts
@@ -214,7 +214,9 @@ class ChromeLauncher implements ProductLauncher {
       '--disable-default-apps',
       '--disable-dev-shm-usage',
       '--disable-extensions',
-      '--disable-features=Translate,BackForwardCache',
+      // TODO: remove AvoidUnnecessaryBeforeUnloadCheckSync below
+      // once crbug.com/1324138 is fixed and released.
+      '--disable-features=Translate,BackForwardCache,AvoidUnnecessaryBeforeUnloadCheckSync',
       '--disable-hang-monitor',
       '--disable-ipc-flooding-protection',
       '--disable-popup-blocking',