page tabs on the side of the page.

[jack380]

Page and sub-page tabs on side have turned into small numbered tabs.
The tab size is no longer adjustable either.
How do I make the tabs show the page title as they did before?

 

[John Waller]

At the bottom RHS of your screen is a tiny left pointing white arrow in a
blue circle.

Click it once to restore page titles and adjustable tab width behaviour.

It's a toggle. Click it again to get tab numbers. Rinse and repeat...