With latest development build on Ubuntu 12.04:
1) Open text tool and type some text.
2) Move cursor to the start of the text.
3) Press Shift+Right repeatedly until all text is selected.
4) Press Shift+Right again, and an exception occurs:
System.Reflection.TargetInvocationException: Exception has been thrown by the target of an invocation. ---> System.ArgumentOutOfRangeException: Argument is out of range.
Parameter name: index
at System.Collections.Generic.List`1[System.String].get_Item (Int32 index) [0x00000] in <filename unknown>:0
at Pinta.Tools.TextEngine.ForeachLine (Int32 startLine, Int32 startPos, Int32 len, Pinta.Tools.Action action) [0x00000] in <filename unknown>:0
at Pinta.Tools.TextEngine.get_SelectionRectangles () [0x00000] in <filename unknown>:0
at Pinta.Tools.TextTool.RedrawText (Boolean showCursor, Boolean useToolLayer) [0x00000] in <filename unknown>:0
at Pinta.Tools.TextTool.OnKeyDown (Gtk.DrawingArea canvas, Gtk.KeyPressEventArgs args) [0x00000] in <filename unknown>:0
at Pinta.Core.BaseTool.DoKeyPress (Gtk.DrawingArea canvas, Gtk.KeyPressEventArgs args) [0x00000] in <filename unknown>:0
at Pinta.Gui.Widgets.PintaCanvas.PintaCanvas_KeyPressEvent (System.Object o, Gtk.KeyPressEventArgs e) [0x00000] in <filename unknown>:0
at (wrapper managed-to-native) System.Reflection.MonoMethod:InternalInvoke (System.Reflection.MonoMethod,object,object[],System.Exception&)
at System.Reflection.MonoMethod.Invoke (System.Object obj, BindingFlags invokeAttr, System.Reflection.Binder binder, System.Object[] parameters, System.Globalization.CultureInfo culture) [0x00000] in <filename unknown>:0
--- End of inner exception stack trace ---
at System.Reflection.MonoMethod.Invoke (System.Object obj, BindingFlags invokeAttr, System.Reflection.Binder binder, System.Object[] parameters, System.Globalization.CultureInfo culture) [0x00000] in <filename unknown>:0
at System.Reflection.MethodBase.Invoke (System.Object obj, System.Object[] parameters) [0x00000] in <filename unknown>:0
at System.Delegate.DynamicInvokeImpl (System.Object[] args) [0x00000] in <filename unknown>:0
at System.MulticastDelegate.DynamicInvokeImpl (System.Object[] args) [0x00000] in <filename unknown>:0
at System.Delegate.DynamicInvoke (System.Object[] args) [0x00000] in <filename unknown>:0
at GLib.Signal.ClosureInvokedCB (System.Object o, GLib.ClosureInvokedArgs args) [0x00000] in <filename unknown>:0
at GLib.SignalClosure.Invoke (GLib.ClosureInvokedArgs args) [0x00000] in <filename unknown>:0
at GLib.SignalClosure.MarshalCallback (IntPtr raw_closure, IntPtr return_val, UInt32 n_param_vals, IntPtr param_values, IntPtr invocation_hint, IntPtr marshal_data) [0x00000] in <filename unknown>:0
Confirmed here