Thank you for pointing to that Seneca!
Mind you when I go and create a 5 column text frame I notice that
- I can not see all 5 columns' details (only 4 are visible in the screenshot)
- right hand edge scrollbar needs to be always on when needed, or the toolbox needs to grow to accommodate all the fields (preferred).
- several of the columns have different widths by default, i'm not sure why that is. I would always expect them to be the same to start!
- Toggle ui (Tab key) should be ignored once I click inside a field to edit it as normal editor behaviour is to be able to use tab to navigate between fields.