Yes... I've had this problem since 19 (perhaps even before)... but in my case, not only a newly created leaf does not appear, but NONE of the previously selectable leafs appear either... the menu is blank...
Originally talking with tech support suggested that if I had TWO leafs named the same it would cause the BLANK MENU issue. So I have been trying to delete duplicate names (and you have to go find these... they don't show up in the object duplicate lists)...
That work for a while (maybe until next time I opened the file) then came back... it will be in ONE FILE then not (available) in another...
This all happens AFTER a successful session... in other words, I create the leaf (in one example a custom garage door).. I produced elevations and 3d views... next time I open the file, the door leafs disappear and the menu is blank.
Duane
Visual Frontiers
AC25 :|: AC26 :|: AC27
:|: Enscape3.4:|:TwinMotion
DellXPS 4.7ghz i7:|: 8gb GPU 1070ti / Alienware M18 Laptop