GetSubmoduleStatusAsync CancellationTokenSource Disposed

[jbialobr]

System.ObjectDisposedException was unhandled by user code
  HResult=-2146232798
  Message=Obiekt CancellationTokenSource związany z tym tokenem CancellationToken został usunięty.
  Source=mscorlib
  ObjectName=""
  StackTrace:
       w System.Threading.CancellationToken.ThrowObjectDisposedException()
       w System.Threading.Tasks.Task.AssignCancellationToken(CancellationToken cancellationToken, Task antecedent, TaskContinuation continuation)
       w System.Threading.Tasks.Task.TaskConstructorCore(Object action, Object state, CancellationToken cancellationToken, TaskCreationOptions creationOptions, InternalTaskOptions internalOptions, TaskScheduler scheduler)
       w System.Threading.Tasks.Task..ctor(Delegate action, Object state, Task parent, CancellationToken cancellationToken, TaskCreationOptions creationOptions, InternalTaskOptions internalOptions, TaskScheduler scheduler)
       w System.Threading.Tasks.Task.InternalStartNew(Task creatingTask, Delegate action, Object state, CancellationToken cancellationToken, TaskScheduler scheduler, TaskCreationOptions options, InternalTaskOptions internalOptions, StackCrawlMark& stackMark)
       w System.Threading.Tasks.TaskFactory.StartNew(Action action, CancellationToken cancellationToken, TaskCreationOptions creationOptions, TaskScheduler scheduler)
       w GitUI.CommandsDialogs.FormBrowse.GetSubmoduleStatusAsync(SubmoduleInfo info, CancellationToken cancelToken) w C:\d\projekty\gitextensions\GitUI\CommandsDialogs\FormBrowse.cs:wiersz 3220
       w GitUI.CommandsDialogs.FormBrowse.<>c__DisplayClass280_0.<UpdateSubmodulesList>b__0() w C:\d\projekty\gitextensions\GitUI\CommandsDialogs\FormBrowse.cs:wiersz 3279
       w System.Threading.Tasks.Task`1.InnerInvoke()
       w System.Threading.Tasks.Task.Execute()
  InnerException: 

[sharwell]

@jbialobr How did you end up hitting this case? It appears to be a duplicate of #4761 - the exception in question should only be thrown if the application is .NET 4.5.2 or earlier (which GitExtensions is not).

[jbialobr]

This is an old bug, it happened while normal working with GE run from debugger (on repo refresh). I often encountered it in the past but not recently.

[gerhardol]

There has been a number of issues with submodules handling, seen more in the debugger but could occur in real scenarios too (at least with more submodules than GE). I prepared a patch to fix some of the problems but postponed the work when the threading rework done. Nice to see some proper corrections.