Using the area beside tabs

Question

I have a normal tab page (with tabs along the top). There is plenty of spare space to the right of the protruding tabs and I wanted to use it to display something.
I cannot create anything in that space so I tried a stacked canvas. Using show_view in W-N-F-I displays it OK
but it disappears when I select any tab. Repeating the show view in W-T-P-C does not work.
Has anyone else tried and/or suceeded in doing this ?
(Second attempt to post this due to server error - apologies if it duplicates)

Answer 1

At first glance, it works (in a simple form!) if 'when-tab-page-changed' trigger contains something like:
go_block('SOME_BLOCK'); -- forces tab control to loose focus
Without 'GO_BLOCK', the staked view disappears when tab page is changed because the TAB remains focused.
My simple form has just a main content canvas, a tab canvas and a small staked canvas (on the right of the tabs), each of them contains items of different data blocks.
GB