Project settings - bug?

I found the following issue in the 2021 Beta version. It seems a bug to me in Studio, but I could be wrong of course :-)

If you perform the following scenario:

1. File > Translate Single document (Select any file)

2. Open Editor

3. Click Project Settings

Now an error occurs:

Here is the trace:

<SDLErrorDetails time="7/8/2020 5:38:24 PM">
  <ErrorMessage>Project file 'D:\My Downloads\CoffeeForEPO_nl-NL_0.xlf_en-US_nl-NL.sdlproj' could not be found.</ErrorMessage>
  <Exception>
    <Type>System.IO.FileNotFoundException, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</Type>
    <FileName />
    <FusionLog />
    <HelpLink />
    <Source>Sdl.ProjectApi.Implementation</Source>
    <HResult>-2147024894</HResult>
    <StackTrace><![CDATA[   at Sdl.ProjectApi.Implementation.ProjectRepository.Load(String projectFilePath)
   at Sdl.ProjectApi.Implementation.Project.Load(String projectFilePath, Boolean createProjectListItem)
   at Sdl.ProjectApi.Implementation.Project.ForceReload()
   at Sdl.TranslationStudio.ProjectManagement.ProjectOperations.ProjectSettingsOperation.Execute(IProject project, String operationId, Object[] args)
   at Sdl.ProjectApi.Implementation.Operations.ProjectOperationComposite.Execute(IProject project, String operationId, Object[] args)
   at Sdl.ProjectApi.Implementation.Project.ExecuteOperation(String operationId, Object[] args)
   at Sdl.TranslationStudio.Editor.TranslationEditor.Actions.AbstractProjectSettingsAction.Execute()
   at Sdl.Desktop.Platform.Implementation.CommandBars.ActionService.<>c__DisplayClass30_0.<ExecuteAction>b__0()
   at Sdl.Desktop.Logger.Log.Resources(Object message, Action action)
   at Sdl.Desktop.Platform.Implementation.CommandBars.ActionService.ExecuteAction(IAction action, ActionOrigin origin, Boolean allowToggle)
   at Sdl.Desktop.Platform.WinForms.IgCommandBarAction.Execute()
   at Sdl.Desktop.Platform.WinForms.IgCommandBarAction._lazyButtonTool_ToolClick(Object sender, ToolClickEventArgs e)
   at Infragistics.Win.UltraWinToolbars.ToolBase.OnToolClick(ToolClickEventArgs e)
   at Infragistics.Win.UltraWinToolbars.UltraToolbarsManager.OnToolClick(ToolClickEventArgs e)
   at Infragistics.Win.UltraWinToolbars.UltraToolbarsManager.FireEvent(ToolbarEventIds id, EventArgs e)
   at Infragistics.Win.UltraWinToolbars.ToolBase.OnToolClick()
   at Infragistics.Win.UltraWinToolbars.ButtonToolUIElement.DoClickProcessing(MouseEventArgs e)
   at Infragistics.Win.UltraWinToolbars.ButtonToolUIElement.OnMouseUp(MouseEventArgs e)
   at Infragistics.Win.ControlUIElementBase.ProcessMouseUpHelper(Object sender, MouseEventArgs e)
   at Infragistics.Win.ControlUIElementBase.ProcessMouseUp(Object sender, MouseEventArgs e)
   at Infragistics.Win.Utilities.ProcessEvent(Control control, ProcessEvent eventToProcess, EventArgs e)
   at Infragistics.Win.UltraWinToolbars.UltraToolbarsDockArea.OnMouseUp(MouseEventArgs e)
   at System.Windows.Forms.Control.WmMouseUp(Message& m, MouseButtons button, Int32 clicks)
   at System.Windows.Forms.Control.WndProc(Message& m)
   at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m)
   at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m)
   at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)]]></StackTrace>
    <InnerException>
      <Type>System.IO.FileNotFoundException, mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</Type>
      <FileName>D:\My Downloads\CoffeeForEPO_nl-NL_0.xlf_en-US_nl-NL.sdlproj</FileName>
      <FusionLog />
      <HelpLink />
      <Source>mscorlib</Source>
      <HResult>-2147024894</HResult>
      <StackTrace><![CDATA[   at System.IO.__Error.WinIOError(Int32 errorCode, String maybeFullPath)
   at System.IO.FileStream.Init(String path, FileMode mode, FileAccess access, Int32 rights, Boolean useRights, FileShare share, Int32 bufferSize, FileOptions options, SECURITY_ATTRIBUTES secAttrs, String msgPath, Boolean bFromProxy, Boolean useLongPath, Boolean checkHost)
   at System.IO.FileStream..ctor(String path, FileMode mode, FileAccess access, FileShare share, Int32 bufferSize)
   at System.Xml.XmlDownloadManager.GetStream(Uri uri, ICredentials credentials, IWebProxy proxy, RequestCachePolicy cachePolicy)
   at System.Xml.XmlUrlResolver.GetEntity(Uri absoluteUri, String role, Type ofObjectToReturn)
   at System.Xml.XmlTextReaderImpl.OpenUrlDelegate(Object xmlResolver)
   at System.Threading.CompressedStack.runTryCode(Object userData)
   at System.Runtime.CompilerServices.RuntimeHelpers.ExecuteCodeWithGuaranteedCleanup(TryCode code, CleanupCode backoutCode, Object userData)
   at System.Threading.CompressedStack.Run(CompressedStack compressedStack, ContextCallback callback, Object state)
   at System.Xml.XmlTextReaderImpl.OpenUrl()
   at System.Xml.XmlTextReaderImpl.Read()
   at System.Xml.XmlTextReader.Read()
   at System.Xml.XmlReader.MoveToContent()
   at Sdl.ProjectApi.Implementation.Migration.AbstractFileMigration.GetFileVersion(String filePath)
   at Sdl.ProjectApi.Implementation.Migration.AbstractFileMigration.Migrate(String filePath)
   at Sdl.ProjectApi.Implementation.ProjectRepository.Load(String projectFilePath)]]></StackTrace>
    </InnerException>
  </Exception>
  <Environment>
    <ProductName>SDL Trados Studio 2021 Beta</ProductName>
    <ProductVersion>16.0.0.0</ProductVersion>
    <EntryAssemblyFileVersion>16.0.0.1324</EntryAssemblyFileVersion>
    <OperatingSystem>Microsoft Windows 10 Pro</OperatingSystem>
    <ServicePack>NULL</ServicePack>
    <OperatingSystemLanguage>1033</OperatingSystemLanguage>
    <CodePage>1252</CodePage>
    <LoggedOnUser>X1-HENK\henkb</LoggedOnUser>
    <DotNetFrameWork>4.0.30319.42000</DotNetFrameWork>
    <ComputerName>X1-HENK</ComputerName>
    <ConnectedToNetwork>True</ConnectedToNetwork>
    <PhysicalMemory>66601556 MB</PhysicalMemory>
  </Environment>
</SDLErrorDetails>