[tambourine_man]

Interesting. Where does it save column size changes, since you can't add that to the absurdly simple CSV “format” (specification)? In metadata? Does it lose this settings if you change the file name behind its back? Or it doesn't try to save such things at all?

[evanem]

There's a setting to automatically fit the column widths based on the contents and it's turned on by default. You can turn it off and manually change the sizes, but they'll be lost once you close the program. If you change the file name externally, it'll assume the current file has been deleted. You can change the file name within the program with the Rename File command.

[simondotau]

Surely all of those settings can be inferred from the file upon opening? Presumably the only settings you actually care about are ones that have predictable consequences for the saved document.