Opening a toolbar won't stick in 12.16

I have reset the toolbars using Settings/Toolbars/Factory Reset Toolbars and now any new toolbar won't stick after I close the Lister.

It returns to the default setup after I re-open the lister.

Is it a bug or something I am overlooking...?

Settings > Toolbars > Set as Default Toolbar Set, is probably what you need.

It's also possible the layout or default lister you're opening is configured to override the default toolbar set, but that's less common.

That worked - Thanks Leo.