Wappler screens have become unworkable

Hi, lately have been in the habit of narrowing down the middle part of the wappler work space (the page design view) to just a slim sliver, to maximise the server connect work space. But I narrowed it down to nothing and now I cannot get it back.

Is there a way to restore the default sizes of the 3 workspaces, ie the server connect in the left, the page design in the middle and the app tree on the right? Without the page design view, I cannot work.

I have found ‘Reset Panel Sizes’ that did not work.