hmm strange, well this happends extreme rarely. 
nothing I can do about it either 
  
Example: 
I null check the interface, then check fi visible. 
if both are good I interact with it. 
  
Just 0.002 seconds later the client actually clicks on it, in that 0.002 second range, the widget somehow wasn't existing. 
So that's just unfornutate  
  
khaleesi