Debian 10 LXDE Start Menu stays up if use keyboard

[k829king]

I seem to have a new situation with the LXDE Start Menu when using the keyboard.
If I use the mouse to click Start and select item from menu the menu disappears as expected.
But if I use keyboard (Ctrl+Esc) cursor keys, select item and press ENTER the selected item opens all okay but the LXDE Start Menu remains.
I have to either select something else from it with mouse OR hover over it with mouse and press ESC then it disappears.
Thoughts?