Test

chrome/browser/app_controller_mac.mm

Index: chrome/browser/app_controller_mac.mm
diff --git a/chrome/browser/app_controller_mac.mm b/chrome/browser/app_controller_mac.mm
index 01feef4dbf749ac126f1cc56fec71712c3104fd7..437637f979528887392c5194ebd7ffbe266570d2 100644
--- a/chrome/browser/app_controller_mac.mm
+++ b/chrome/browser/app_controller_mac.mm
@@ -897,7 +897,7 @@ class AppControllerProfileObserver : public ProfileInfoCacheObserver {
   // already loaded a new one, so the pointer needs to be updated;
   // otherwise we will try to start up a browser window with a pointer
   // to the old profile.
-  if (lastProfile_ && profilePath == lastProfile_->GetPath())
+  if (!lastProfile_ || profilePath == lastProfile_->GetPath())
     lastProfile_ = g_browser_process->profile_manager()->GetLastUsedProfile();
 
   auto it = profileBookmarkMenuBridgeMap_.find(profilePath);