At the moment metrical units are always listed before the imperial one(s). It would be more nice for users with a locale that uses imperial units if the imperial unit(s) are listed first, as items at the begin of a list are easier found. Reproducible: Always
Thank you for the bug report. As this report hasn't seen any changes in 5 years or more, we ask if you can please confirm that the issue still persists. If this bug is no longer persisting or relevant please change the status to resolved.