Okay, understand all that.
I suppose my point still stands that the approach to call it "min width", when it doesnt respond like this in ALL browsers is quite confusing.
Completing a default process in Cornerstone (ie. choosing 100px min width) within the Text Column function should result in exactly the same front-end outcome in ALL browsers. There should not need to be a requirement to add custom CSS from a default Cornerstone input. Or this defeats the entire purpose of said input, as it essentially needs to be adjusted across all Browsers (with Custom CSS).
Optional fix: Allow 'auto' to be input in the 'min-width' area?