Bug with insert code and customised workspace PG7.2

I have a custom workspace over three screens. Inserting code via the orange line in the tree is not possible. I click on ‘insert after [div]’ and the field for the code does not appear for the ‘insert code html’.

It works OK with a standard workspace configuration.

Really annoying as I have to write the code longhand in </> window, or keep switching workspaces.
Any ideas on how to fix?
Mac OS 12.6.1