From 7f6f355d80fb559c88e4e727a77056222243e8da Mon Sep 17 00:00:00 2001
From: chrwend <chwend@microsoft.com>
Date: Thu, 28 Apr 2016 14:43:59 -0700
Subject: [PATCH] Dismiss auth controller on UI thread

---
 Classes/BITAuthenticator.m | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/Classes/BITAuthenticator.m b/Classes/BITAuthenticator.m
index 40c69208dc..e8a28b15ec 100644
--- a/Classes/BITAuthenticator.m
+++ b/Classes/BITAuthenticator.m
@@ -523,8 +523,9 @@ static unsigned char kBITPNGEndChunk[4] = {0x49, 0x45, 0x4e, 0x44};
   if (authToken) {
     identified = YES;
     [self storeInstallationIdentifier:authToken withType:self.identificationType];
-    [self dismissAuthenticationControllerAnimated:YES completion:nil];
-    self.authenticationController = nil;
+    dispatch_async(dispatch_get_main_queue(), ^{
+      [self dismissAuthenticationControllerAnimated:YES completion:nil];
+    });
     BOOL success = [self addStringValueToKeychain:email forKey:kBITAuthenticatorUserEmailKey];
     if (!success) {
       [self alertOnFailureStoringTokenInKeychain];