Entering a command/chat message while it is selected crashes the game next time you open chat

[MustaphaTR]

OpenRA engine version {DEV_VERSION}
Red Alert mod version {DEV_VERSION}
on map 50ff8481b93ec70c20ebb08cc298ffeb49d1cb2a (All Connected by Buddha).
Date: 2018-07-31 08:04:42Z
Operating System: Windows (Microsoft Windows NT 6.2.9200.0)
Runtime Version: .NET CLR 4.0.30319.42000
Exception of type `System.ArgumentOutOfRangeException`: The index and length must refer to a position within the string.
Parametre adı: length
   konum: System.String.Substring(Int32 startIndex, Int32 length)
   konum: OpenRA.Mods.Common.Widgets.TextFieldWidget.Draw() c:\OpenRA\Bleed\OpenRA.Mods.Common\Widgets\TextFieldWidget.cs içinde: satır 595
   konum: OpenRA.Widgets.Widget.DrawOuter() c:\OpenRA\Bleed\OpenRA.Game\Widgets\Widget.cs içinde: satır 457
   konum: OpenRA.Widgets.Widget.DrawOuter() c:\OpenRA\Bleed\OpenRA.Game\Widgets\Widget.cs içinde: satır 459
   konum: OpenRA.Widgets.Widget.DrawOuter() c:\OpenRA\Bleed\OpenRA.Game\Widgets\Widget.cs içinde: satır 459
   konum: OpenRA.Widgets.Widget.DrawOuter() c:\OpenRA\Bleed\OpenRA.Game\Widgets\Widget.cs içinde: satır 459
   konum: OpenRA.Widgets.Widget.DrawOuter() c:\OpenRA\Bleed\OpenRA.Game\Widgets\Widget.cs içinde: satır 459
   konum: OpenRA.Widgets.Widget.DrawOuter() c:\OpenRA\Bleed\OpenRA.Game\Widgets\Widget.cs içinde: satır 459
   konum: OpenRA.Widgets.Ui.Draw() c:\OpenRA\Bleed\OpenRA.Game\Widgets\Widget.cs içinde: satır 92
   konum: OpenRA.Game.RenderTick() c:\OpenRA\Bleed\OpenRA.Game\Game.cs içinde: satır 669
   konum: OpenRA.Game.Loop() c:\OpenRA\Bleed\OpenRA.Game\Game.cs içinde: satır 789
   konum: OpenRA.Game.Run() c:\OpenRA\Bleed\OpenRA.Game\Game.cs içinde: satır 807
   konum: OpenRA.Game.InitializeAndRun(String[] args) c:\OpenRA\Bleed\OpenRA.Game\Game.cs içinde: satır 256
   konum: OpenRA.Program.Main(String[] args) c:\OpenRA\Bleed\OpenRA.Game\Support\Program.cs içinde: satır 37

It doesn't crash if you cancel but only when enter the message.