MFMailComposeViewController rendered with empty fields

I have an interesting problem. My mail view manager only appears with a subject, but no body or recipients. In the code I am setting all these fields, but somehow only the theme appears.

Now this is happening in the callback block, but I'm not sure why it affects what is being populated.

        MFMailComposeViewController *picker = [[MFMailComposeViewController alloc] init];
        picker.mailComposeDelegate = self;
        [picker setSubject: @"test 12345"];

        // Set up recipients
        NSArray *toRecipients = [NSArray arrayWithObject:email];
        [picker setToRecipients:toRecipients];

        // Fill out the email body text
        NSString *emailBody = @"test 1234";
        [picker setMessageBody:emailBody isHTML:NO];
        [self presentViewController:picker animated:YES completion:nil];

      

        
        
        
      

    

I also get this error when trying to change any fields:

viewServiceDidTerminateWithError: Error Domain = _UIViewServiceInterfaceErrorDomain Code = 3 "Operation failed to complete. (Error _UIViewServiceInterfaceErrorDomain 3.)" UserInfo = 0x7fec540454d0 {Message = Service connection terminated}

Creating a "global" variable didn't help:

@property (non-atomic, strong) MFMailComposeViewController * mailComposer;