Issue with select date if date format is set to "d M Y"

I think I have found an issue if date format are set like this :

agenda.manager_date_format : d M Y
agenda.manager_date_format_long : l d M Y

The result is you can’t select a future date with the selector : the date stay back to the current day.
If I’m unclear, I can make a screencast to view the behavior.

Maybe it’s due to the space, because I have found a workaround by replacing the space with a slash :

agenda.manager_date_format : d/m/Y
agenda.manager_date_format_long : l d/m/Y

I can’t reproduce that issue here.

I have recorded a small screencast to show you :