I lately edited a certain plugin to conditionally add the "Exit back" button to its custom clientprefs menu depending on whether it was opened through sm_settings or a direct command, but, I thought of also checking GetMenuExitBackButton through the custom items' selections to keep the button visibility decision on menu re-instantiation.

However, it always returned false on the MenuAction_Select cases, and then, leading to the native API code seems to prove it's comparing against the wrong stored flag (MENUFLAG_BUTTON_EXIT):

Is this a clear mistake or I'm missing something? If I shall create a PR, that'd be straightforward.