Program: 69896
Project: 69896
Buggy source:
@Override protected void initForm(FormItemContainer formLayout,Controller listener,UserRequest ureq){
  if (formLayout instanceof FormLayoutContainer) {
    FormLayoutContainer layoutCont=(FormLayoutContainer)formLayout;
    if (needMemberInfoController) {
      infoController=new MemberInfoController(ureq,getWindowControl(),member,repoEntry,mainForm);
      listenTo(infoController);
      layoutCont.put("String_Node_Str",infoController.getInitialComponent());
    }
    String name=repoEntry == null ? businessGroup.getName() : repoEntry.getDisplayname();
    String title=translate("String_Node_Str",new String[]{name});
    layoutCont.contextPut("String_Node_Str",title);
  }
  if (repoEntry != null) {
    String[] repoValues=new String[]{translate("String_Node_Str"),translate("String_Node_Str"),translate("String_Node_Str")};
    repoRightsEl=uifactory.addCheckboxesVertical("String_Node_Str",formLayout,repoRightsKeys,repoValues,null,1);
    if (member != null) {
      RepoPermission repoPermission=PermissionHelper.getPermission(repoEntry,member,memberships);
      repoRightsEl.select("String_Node_Str",repoPermission.isOwner());
      repoRightsEl.select("String_Node_Str",repoPermission.isTutor());
      repoRightsEl.select("String_Node_Str",repoPermission.isParticipant());
    }
  }
  FlexiTableColumnModel tableColumnModel=FlexiTableDataModelFactory.createFlexiTableColumnModel();
  tableColumnModel.addFlexiColumnModel(new DefaultFlexiColumnModel("String_Node_Str"));
  tableColumnModel.addFlexiColumnModel(new DefaultFlexiColumnModel("String_Node_Str"));
  tableColumnModel.addFlexiColumnModel(new DefaultFlexiColumnModel("String_Node_Str"));
  tableColumnModel.addFlexiColumnModel(new DefaultFlexiColumnModel("String_Node_Str"));
  tableColumnModel.addFlexiColumnModel(new DefaultFlexiColumnModel("String_Node_Str"));
  tableColumnModel.addFlexiColumnModel(new DefaultFlexiColumnModel("String_Node_Str"));
  tableColumnModel.addFlexiColumnModel(new DefaultFlexiColumnModel("String_Node_Str"));
  tableDataModel=new EditMemberTableDataModel(Collections.<MemberOption>emptyList(),tableColumnModel);
  uifactory.addTableElement("String_Node_Str",tableDataModel,formLayout);
  if (withButtons) {
    FormLayoutContainer buttonLayout=FormLayoutContainer.createButtonLayout("String_Node_Str",getTranslator());
    formLayout.add(buttonLayout);
    buttonLayout.setRootForm(mainForm);
    uifactory.addFormSubmitButton("String_Node_Str",buttonLayout);
    uifactory.addFormCancelButton("String_Node_Str",buttonLayout,ureq,getWindowControl());
  }
}

Fixed version (ground truth):
@Override protected void initForm(FormItemContainer formLayout,Controller listener,UserRequest ureq){
  if (formLayout instanceof FormLayoutContainer) {
    FormLayoutContainer layoutCont=(FormLayoutContainer)formLayout;
    if (needMemberInfoController) {
      infoController=new MemberInfoController(ureq,getWindowControl(),member,repoEntry,mainForm);
      listenTo(infoController);
      layoutCont.add(infoController.getInitialFormItem());
      layoutCont.add("String_Node_Str",infoController.getInitialFormItem());
    }
    String name=repoEntry == null ? businessGroup.getName() : repoEntry.getDisplayname();
    String title=translate("String_Node_Str",new String[]{name});
    layoutCont.contextPut("String_Node_Str",title);
  }
  if (repoEntry != null) {
    String[] repoValues=new String[]{translate("String_Node_Str"),translate("String_Node_Str"),translate("String_Node_Str")};
    repoRightsEl=uifactory.addCheckboxesVertical("String_Node_Str",formLayout,repoRightsKeys,repoValues,null,1);
    if (member != null) {
      RepoPermission repoPermission=PermissionHelper.getPermission(repoEntry,member,memberships);
      repoRightsEl.select("String_Node_Str",repoPermission.isOwner());
      repoRightsEl.select("String_Node_Str",repoPermission.isTutor());
      repoRightsEl.select("String_Node_Str",repoPermission.isParticipant());
    }
  }
  FlexiTableColumnModel tableColumnModel=FlexiTableDataModelFactory.createFlexiTableColumnModel();
  tableColumnModel.addFlexiColumnModel(new DefaultFlexiColumnModel("String_Node_Str"));
  tableColumnModel.addFlexiColumnModel(new DefaultFlexiColumnModel("String_Node_Str"));
  tableColumnModel.addFlexiColumnModel(new DefaultFlexiColumnModel("String_Node_Str"));
  tableColumnModel.addFlexiColumnModel(new DefaultFlexiColumnModel("String_Node_Str"));
  tableColumnModel.addFlexiColumnModel(new DefaultFlexiColumnModel("String_Node_Str"));
  tableColumnModel.addFlexiColumnModel(new DefaultFlexiColumnModel("String_Node_Str"));
  tableColumnModel.addFlexiColumnModel(new DefaultFlexiColumnModel("String_Node_Str"));
  tableDataModel=new EditMemberTableDataModel(Collections.<MemberOption>emptyList(),tableColumnModel);
  uifactory.addTableElement("String_Node_Str",tableDataModel,formLayout);
  if (withButtons) {
    FormLayoutContainer buttonLayout=FormLayoutContainer.createButtonLayout("String_Node_Str",getTranslator());
    formLayout.add(buttonLayout);
    buttonLayout.setRootForm(mainForm);
    uifactory.addFormSubmitButton("String_Node_Str",buttonLayout);
    uifactory.addFormCancelButton("String_Node_Str",buttonLayout,ureq,getWindowControl());
  }
}