Created attachment 82109 [details]
Column width is set to 63 cm.
It seems as though when importing a CSV file, the column width is chosen incorrectly in some times for scientific notation numbers. It's as though it interprets the number (1.79E308) as 17900000...(308) of them, chooses the column width and then formats them better, in some cases. I have attached two CSV files, one works, the other doesn't. The only difference is the row order is flipped.
Created attachment 82110 [details]
Working CSV file
I can confirm reproducible on LO 184.108.40.206 (Win7 32bit).
Column width incorrectly loaded if cell A2 'Scientific' formatted, while the other cells is 'Number' Standard Format.
But in Bug 59820 that happens even all cell A 'Number' Standard formatted. So possibly it's a duplicate to that bug.
Created attachment 91337 [details]
Calc with CSV imported
I opened Cthe SV in LibreOffice
Build ID: 7bf567613a536ded11709b952950c9e8f7181a4a
(on Debian Linux machine)
The behaviour is correct (I added a screenshot of the resulting Calc document)