Issue with adding a sidepanel action to workflow of QuoteMaint (Screen CR304500)

 Hello,

i want to add a action with the type “Navigation: Sidepanel” to the QuoteMaint graph. My issue is, that despite no errors and the method executing there is no sidepanel appearing.

I have used the same approach for SOShipmentEntry and three other graphs, were the sidepanels appeared and worked correctly.

I checked that QuoteMaint already has an existing workflow and that there are no other customizations or extensions interfering.

Could the issue be a restriction in the workflow of QuoteMaint?

Every idea or tip is highly appreciated :) Thank you

using PX.Data;
using PX.Data.WorkflowAPI;
using PX.Objects.CR;
using PX.Objects.PM.CacheExtensions;
using PX.Objects.SO;


namespace PX.Objects.CR
{
  public class QuoteMaint_Test_Extension : PXGraphExtension<PX.Objects.CR.QuoteMaint>
  {

    public sealed override void Configure(PXScreenConfiguration config)
    {
      Configure(config.GetScreenConfigurationContext<QuoteMaint, CRQuote>());
    }

    protected static void Configure(WorkflowContext<QuoteMaint, CRQuote> context)
    {
      PXTrace.WriteInformation("Configure start");

      var sidePanel = context.Navigation.SidePanel(screen => screen
        .NavigateToScreen("TE502010")
        .WithIcon("folder_open")
        .WithAssignments(filler =>
          {
            filler.Add(nameof(CRQuote.QuoteNbr), c => c.SetFromField<CRQuote.quoteNbr>());
          }
        ));

      var action = context.ActionDefinitions.CreateNew("SidepanelQuoteMaintActionTest", a => a
        .DisplayName("DMS")
        .IsSidePanelScreen(sidePanel)
      );

      PXTrace.WriteInformation("Configure variables declared");

      context.UpdateScreenConfigurationFor(screen =>
      {
        return screen
          .WithActions(actions => { actions.Add(action); });
      });
    }
  }
}