Redmine

I'ts probably due to an alphabetical sort.

You can assign dates to your versions, it's the first field used to sort.

I don't know the release date ahead of time, which is apparently what this date is used for (Due in X days). But I can use this as a workaround for the sorting.

Would it not be more useful to simply allow dynamic sorting both int settings/versions page and the Roadmap page? That way people can choose whichever column is meaningful to them, version number or due date.

I am not too keen on sorting the version by number if that means enforcing strict numerical version numbers. We preface our versions with project strings and sometimes add suffixes. For example: P-01.001.0001.b12. It is simple enough to adopt a placeholder pattern for version numbers (##.###.####) such that alphabetic and numeric sorting amount to the same thing.

Actually, since we don't use numbers in versions at all (bug instead some fancy names), I'd prefer a custom sorting.
I can see how this should be a rare case and numerical sorting should be the default, but I'd still think this should be considered.

+1