TYPO3 Core

According to the documentation https://docs.typo3.org/typo3cms/TyposcriptReference/latest/MenuObjects/Tmenu/Index.html for a TMENU a target can be entered.
In Version 9.5.1 this has no impact.

        20 = HMENU
        20 {

            entryLevel = 0

            1 = TMENU
            1 {
                target = _top

                NO {
                    text = nav_title // title
                    wrapItemAndSub = <li>|</li>
                }
            }
        }

Also 'altTarget' for TMENUITEM is not working

        20 = HMENU
        20 {

            entryLevel = 0

            1 = TMENU
            1 {
                target = _top

                NO {
                    text = nav_title // title
                    wrapItemAndSub = <li>|</li>
                    altTarget = someTarget
                }
            }
        }