UI Input Field and character limit bug

Im using an input field and setting the text to some value which is not bigger than the character limit (which is 20).
and an exception is being thrown:
ArgumentOutOfRangeException: startIndex + length > this.length

By looking at the source of the input field im seeing where this is comming from:

Code (CSharp):

1.         public string text
2.         {
3.             get
4.             {
5.                 return this.m_Text;
6.             }
7.             set
8.             {
9.                 if (this.text == value)
10.                     return;
11.                 if (this.onValidateInput != null || this.characterValidation != InputField.CharacterValidation.None)
12.                 {
13.                     this.m_Text = string.Empty;
14.                     InputField.OnValidateInput onValidateInput = this.onValidateInput ?? new InputField.OnValidateInput(this.Validate);
15.                     int num = this.characterLimit <= 0 ? value.Length : Math.Min(this.characterLimit - 1, value.Length);
16.                     for (int index = 0; index < num; ++index)
17.                     {
18.                         char ch = onValidateInput(this.m_Text, this.caretPositionInternal, value[index]);
19.                         if ((int)ch != 0)
20.                             this.m_Text += (string)(object)ch;
21.                     }
22.                 }
23.                 else
24.                     this.m_Text = this.characterLimit <= 0 ? value : value.Substring(0, this.characterLimit);
25.                 if (!Application.isPlaying)
26.                 {
27.                     this.SendOnValueChangedAndUpdateLabel();
28.                 }
29.                 else
30.                 {
31.                     if (this.m_Keyboard != null)
32.                         this.m_Keyboard.text = this.m_Text;
33.                     if (this.m_CaretPosition > this.m_Text.Length)
34.                         this.m_CaretPosition = this.m_CaretSelectPosition = this.m_Text.Length;
35.                     this.SendOnValueChangedAndUpdateLabel();
36.                 }
37.             }
38.         }
39.  

This is happening because of this line:

Code (CSharp):

1. this.m_Text = this.characterLimit <= 0 ? value : value.Substring(0, this.characterLimit);

It is happening only when the validation is empty and when the character limit is greater than 0.

 

Thank you!