Program: 69506
Project: 69506
Buggy source:
/** 
 * @see org.olat.core.gui.components.form.flexible.impl.FormBasicController#initForm(org.olat.core.gui.components.form.flexible.FormItemContainer,org.olat.core.gui.control.Controller,org.olat.core.gui.UserRequest)
 */
@Override protected void initForm(FormItemContainer formLayout,Controller listener,UserRequest ureq){
  shortTitle=uifactory.addTextElement("String_Node_Str","String_Node_Str",SHORT_TITLE_MAX_LENGTH,(menuTitle == null ? "String_Node_Str" : menuTitle),formLayout);
  shortTitle.setElementCssClass("String_Node_Str");
  shortTitle.setMandatory(true);
  shortTitle.setCheckVisibleLength(true);
  title=uifactory.addTextElement("String_Node_Str","String_Node_Str",255,(displayTitle == null ? "String_Node_Str" : displayTitle),formLayout);
  title.setElementCssClass("String_Node_Str");
  objectives=uifactory.addRichTextElementForStringData("String_Node_Str","String_Node_Str",(learningObjectives == null ? "String_Node_Str" : learningObjectives),10,-1,false,null,null,formLayout,ureq.getUserSession(),getWindowControl());
  objectives.setMaxLength(4000);
  String[] values=new String[]{translate("String_Node_Str"),translate("String_Node_Str"),translate("String_Node_Str"),translate("String_Node_Str"),translate("String_Node_Str")};
  displayOptions=uifactory.addDropdownSingleselect("String_Node_Str","String_Node_Str",formLayout,displayOptionsKeys,values,null);
  displayOptions.select(displayOption,true);
  final FormLayoutContainer buttonLayout=FormLayoutContainer.createButtonLayout("String_Node_Str",getTranslator());
  formLayout.add(buttonLayout);
  uifactory.addFormSubmitButton("String_Node_Str",buttonLayout).setElementCssClass("String_Node_Str");
}

Fixed version (ground truth):
/** 
 * @see org.olat.core.gui.components.form.flexible.impl.FormBasicController#initForm(org.olat.core.gui.components.form.flexible.FormItemContainer,org.olat.core.gui.control.Controller,org.olat.core.gui.UserRequest)
 */
@Override protected void initForm(FormItemContainer formLayout,Controller listener,UserRequest ureq){
  shortTitle=uifactory.addTextElement("String_Node_Str","String_Node_Str",SHORT_TITLE_MAX_LENGTH,(menuTitle == null ? "String_Node_Str" : menuTitle),formLayout);
  shortTitle.setElementCssClass("String_Node_Str");
  shortTitle.setMandatory(true);
  shortTitle.setCheckVisibleLength(true);
  title=uifactory.addTextElement("String_Node_Str","String_Node_Str",255,(displayTitle == null ? "String_Node_Str" : displayTitle),formLayout);
  String longTitle=new String(translate("String_Node_Str",new String[]{menuTitle}));
  title.setPlaceholderText(longTitle);
  title.setElementCssClass("String_Node_Str");
  objectives=uifactory.addRichTextElementForStringData("String_Node_Str","String_Node_Str",(learningObjectives == null ? "String_Node_Str" : learningObjectives),10,-1,false,null,null,formLayout,ureq.getUserSession(),getWindowControl());
  objectives.setMaxLength(4000);
  String[] values=new String[]{translate("String_Node_Str"),translate("String_Node_Str"),translate("String_Node_Str"),translate("String_Node_Str"),translate("String_Node_Str")};
  displayOptions=uifactory.addDropdownSingleselect("String_Node_Str","String_Node_Str",formLayout,displayOptionsKeys,values,null);
  displayOptions.select(displayOption,true);
  final FormLayoutContainer buttonLayout=FormLayoutContainer.createButtonLayout("String_Node_Str",getTranslator());
  formLayout.add(buttonLayout);
  uifactory.addFormSubmitButton("String_Node_Str",buttonLayout).setElementCssClass("String_Node_Str");
}