InputField Weird behaviour

I'm just creating a small chat system and found some strange behaviour with the InputField. I'm still looking for a solution so anything is appreciated.

Issue

  - When the InputField is Selected programmaticly with the code below.

It's not possible to type untill either i wait and press "a" nothing else affects this, or Press "spacebar" and i can type normally or when "enter" is pressed it will also activate but this is quiet useless since this is the way to send the message.

 public InputField inputText;                
 
 EventSystem.current.SetSelectedGameObject(inputText.gameObject);
 inputText.ActivateInputField();
 inputText.Select();