Unity 2019.3.13f1, MM 2.0.2
Function node in the main graph sometimes throws following exceptions when adding new Exit the the Function's subgraph:
Draw Graph Window failed: System.ArgumentException: An item with the same key has already been added. Key: e048307e-de58-4330-b61b-eb1911d4bf8d
at System.Collections.Generic.Dictionary`2[TKey,TValue].TryInsert (TKey key, TValue value, System.Collections.Generic.InsertionBehavior behavior) [0x000c1] in :0
at System.Collections.Generic.Dictionary`2[TKey,TValue].Add (TKey key, TValue value) [0x00000] in :0
at MapMagic.Nodes.GraphExtensions.CompileGraphGuidLut (MapMagic.Nodes.Graph graph) [0x0001d] in D:\_ProjectsMine\eclipse\Assets\3rdParty\MapMagic\Nodes\Exposed.cs:209
at MapMagic.Nodes.Exposed.ReadOverride (MapMagic.Nodes.Graph graph, System.Collections.Generic.Dictionary`2[TKey,TValue] ovd) [0x00001] in D:\_ProjectsMine\eclipse\Assets\3rdParty\MapMagic\Nodes\Exposed.cs:83
at MapMagic.Nodes.GUI.BiomesEditors.DrawFunction (MapMagic.Nodes.Biomes.Function200 fn) [0x00136] in D:\_ProjectsMine\eclipse\Assets\3rdParty\MapMagic\Generators\Biomes\Editor\BiomesEditors.cs:148
at Den.Tools.GUI.Draw.Invoke[T] (System.Delegate action, T obj, System.Object[] args) [0x0001e] in D:\_ProjectsMine\eclipse\Assets\3rdParty\MapMagic\Tools\GUI\Editor\Draw.cs:1312
at (wrapper dynamic-method) System.Object.CallSite.Target(System.Runtime.CompilerServices.Closure,System.Runtime.CompilerServices.CallSite,System.Type,System.Delegate,object,object[])
at Den.Tools.GUI.Draw.Editor (System.Object obj, System.Object[] args, System.String cat) [0x000bf] in D:\_ProjectsMine\eclipse\Assets\3rdParty\MapMagic\Tools\GUI\Editor\Draw.cs:1301
at MapMagic.Nodes.GUI.GeneratorDraw.DrawGenerator (MapMagic.Nodes.Generator gen, MapMagic.Nodes.Graph graph, System.Boolean selected) [0x00195] in D:\_ProjectsMine\eclipse\Assets\3rdParty\MapMagic\Nodes\Editor\GeneratorDraw.cs:85
at MapMagic.Nodes.GUI.GraphWindow.DrawGraph () [0x003a1] in D:\_ProjectsMine\eclipse\Assets\3rdParty\MapMagic\Nodes\Editor\GraphWindow.cs:276
UnityEngine.Debug:LogError(Object)
MapMagic.Nodes.GUI.GraphWindow:DrawGraph() (at Assets/3rdParty/MapMagic/Nodes/Editor/GraphWindow.cs:280)
Den.Tools.GUI.UI:Draw(Action, Boolean, Boolean) (at Assets/3rdParty/MapMagic/Tools/GUI/Editor/UI.cs:188)
Den.Tools.GUI.c__DisplayClass25_0:b__0(Int32) (at Assets/3rdParty/MapMagic/Tools/GUI/Editor/UI.cs:64)
UnityEditor.EditorWindow:BeginWindows()
MapMagic.Nodes.GUI.G