Fixes #2437

Author: benjaperez1983

src/OSPSuite.UI/Controls/InputBoxDialog.cs

@@ -25,6 +25,7 @@ public InputBoxDialog()
          InitializeComponent();
          InitializeResources();
          Load += onLoad;
+         Shown += onShown;
       }
 
       public override void InitializeResources()
@@ -73,7 +74,6 @@ private void onLoad(object sender, EventArgs e)
          cbInput.SelectionLength = cbInput.Text.Length;
          cbInput.EditValueChanging += validateInput;
          cbInput.EditValue = _defaultValue;
-         cbInput.Focus();
       }
 
       private void validateInput(object sender, ChangingEventArgs e)
@@ -98,5 +98,10 @@ protected override void OnValidationError(Control control, string error)
          _hasError = true;
          base.OnValidationError(control, error);
       }
+
+      private void onShown(object sender, EventArgs e)
+      {
+         cbInput.Focus();
+      }
    }
 }