Menu 2.1 Fixed Column Sizing

Without the ability to resize columns feels like a limiting step backwards for how we operate. We've become accustomed seeing all our columns in on page, as an effective way to work. Enforcement of Menu 2.1 forces a style and spacing layout which I feel now a restriction. We don't even have the horizontal scroll bar option.

I'm using Chrome. At 100% so much of the page is taken for [supplier] and [Reference #].
Even at reduced browser zoom to 25% - I still cannot see everything which we had before - and can't even toggle off columns - because the option to select columns remains off the page.

See screen grab. a significant amount is unnecessary whitespace (?)