TabsetPanel on TabsetPanel does not restore selection

[fls-indinf]

When adding a TabsetPanel as content of a tab on another TabsetPanel, the seletion of the lower one will not be restored after switching back and forth.

I created a SimpleWorkScreen like this:

public class SimpleWorkScreen extends RemoteWorkScreen {

  UITabsetPanel tabPanel;

  public SimpleWorkScreen(IWorkScreenApplication pApplication, AbstractConnection pConnection) throws Throwable {
    super(pApplication, pConnection, null);
    initializeUI();
  }

  /**
   * Initializes the UI.
   * 
   * @throws Throwable if the initialization throws an error
   */
  private void initializeUI() throws Throwable {
    setLayout(new UIBorderLayout());

    UITabsetPanel tabPanel = new UITabsetPanel();

    UITabsetPanel tabPanel1 = new UITabsetPanel();

    tabPanel1.add(new UIPanel(), "A");
    tabPanel1.add(new UIPanel(), "B");
    tabPanel.add(tabPanel1, "1");

    UITabsetPanel tabPanel2 = new UITabsetPanel();

    tabPanel2.add(new UIPanel(), "C");
    tabPanel2.add(new UIPanel(), "D");
    tabPanel.add(tabPanel2, "2");

    add(tabPanel, IBorderLayout.CENTER);
  }

I switched to tab 2 and D. Then back to 1.
After switching back to tab 2, tab C was selected and I couldn't select tab D.

[fls-indinf]

The issue seems to occur, when you add a UITabsetPanel as tab on another UITabsetPanel. When adding a UITabsetPanel on a UIPanel before and then adding the UIPanel as tab on the UITabsetPanel, the selection seems to work as expected.

    UITabsetPanel tabPanel = new UITabsetPanel();

    UITabsetPanel tabPanel1 = new UITabsetPanel();

    tabPanel1.add(new UIPanel(), "A");
    tabPanel1.add(new UIPanel(), "B");
    UIPanel workaroundPanel = new UIPanel(new UIBorderLayout());
    workaroundPanel.add(tabPanel1, UIBorderLayout.CENTER);
    tabPanel.add(workaroundPanel, "1");

    UITabsetPanel tabPanel2 = new UITabsetPanel();

    tabPanel2.add(new UIPanel(), "C");
    tabPanel2.add(new UIPanel(), "D");
    workaroundPanel = new UIPanel(new UIBorderLayout());
    workaroundPanel.add(tabPanel2, UIBorderLayout.CENTER);
    tabPanel.add(workaroundPanel, "2");

    setLayout(new UIBorderLayout());
    add(tabPanel, IBorderLayout.CENTER);

[rjahn]

We'll check the problem but currently we're working on migration to latest primereact.