Program crashes when encountering newline in Tmux

[sorrell]

When using tmux with a vertical split, InteractivePrompt crashes when the buffer runs over into a new line.

Unhandled Exception:                                                                                                  
System.ArgumentOutOfRangeException: Value must be positive and below the buffer height.                               
Parameter name: top                                                                                                   
  at System.TermInfoDriver.SetCursorPosition (Int32 left, Int32 top) <0x7f8248a78be0 + 0x00274> in <filename unknown>:
0                                                                                                                     
  at System.ConsoleDriver.SetCursorPosition (Int32 left, Int32 top) <0x7f8248a629c0 + 0x00048> in <filename unknown>:0
                                                                                                                      
  at System.Console.SetCursorPosition (Int32 left, Int32 top) <0x7f8248a61670 + 0x00011> in <filename unknown>:0      
  at Cintio.InteractivePrompt.RewriteLine (System.Collections.Generic.List`1 input, Int32 inputPosition) <0x41f634f0 +
 0x00127> in <filename unknown>:0                                                                                     
  at Cintio.InteractivePrompt.Run (System.Func`4 lambda, System.String prompt, System.String startupMsg, System.Collec
tions.Generic.List`1 completionList) <0x41f616b0 + 0x00dfb> in <filename unknown>:0                                   
  at ConsoleApplication3.Program.Main (System.String[] args) <0x41f24d50 + 0x00357> in <filename unknown>:0           
[ERROR] FATAL UNHANDLED EXCEPTION: System.ArgumentOutOfRangeException: Value must be positive and below the buffer hei
ght.                                                                                                                  
Parameter name: top                                                                                                   
  at System.TermInfoDriver.SetCursorPosition (Int32 left, Int32 top) <0x7f8248a78be0 + 0x00274> in <filename unknown>:
0                                                                                                                     
  at System.ConsoleDriver.SetCursorPosition (Int32 left, Int32 top) <0x7f8248a629c0 + 0x00048> in <filename unknown>:0
                                                                                                                      
  at System.Console.SetCursorPosition (Int32 left, Int32 top) <0x7f8248a61670 + 0x00011> in <filename unknown>:0      
  at Cintio.InteractivePrompt.RewriteLine (System.Collections.Generic.List`1 input, Int32 inputPosition) <0x41f634f0 +
 0x00127> in <filename unknown>:0                                                                                     
  at Cintio.InteractivePrompt.Run (System.Func`4 lambda, System.String prompt, System.String startupMsg, System.Collec                                      
tions.Generic.List`1 completionList) <0x41f616b0 + 0x00dfb> in <filename unknown>:0                                   
  at ConsoleApplication3.Program.Main (System.String[] args) <0x41f24d50 + 0x00357> in <filename unknown>:0