Tab to move between listers and viewer pane

Opi 13 Maniacs!
Consider a dual lister and viewer pane visible.
Cursor is in the LHS lister
In DO13 hitting the tab key moves from LHS lister (1) to RHS lister (2) and back (Red Arrows)
In DO12 hitting the tab key moved from LHS lister (2) to RHS lister (2) to viewer (3) then back to LHS lister (1).
I believe that hitting Shift-tab moved in the opposite direction.

With single lister and viewer it works as normal.....

Try checking Preferences / File Displays / Options / Tab Key / Cycle through all Lister user interface elements.


DO13 you beauty!!!!!!!!!