Create a new xlsx-document, save it, reload (or close and open) it, save it again and reload, watch the column width magically shrinking.
Should be a dup of bug 91475.
Except there isn't any other program (MS Excel) or altering of data involved. It 'just happens' without a (obvious) way to avoid the outcome. Is anyone else able to reproduce/observe this odd misbehaviour (which doesn't occur in Version 4)?
Would be nice if someone could spend some spare seconds to test this, there must be more users which want to save their spreadsheets in xlsx-format.
*** This bug has been marked as a duplicate of bug 91475 ***