oddity when formatting column widths,
it's really not a big problem, and not extensively tested, sorry, pls. recheck ... i found when formatting 'non-contiguous' columns at the same time that the formatting is correctly applied on the screen, but is probably saved incorrectly to the file, namely as if you had formatted a contiguous block.
Example images below, recipe: select columns B, D, F and H by clicking on the column header while holding down the ctrl key, right click on one of the column headers, and - column - width - e.g. double from 64 pixel to 128 pixel. In the current view the columns B, D, F and H are displayed widened.
But after saving and reloading the file, the widening shifts to the 'block' B:E, while F and H appear in normal width.