I also have the problem, not being able to rename any folders since using ONE some time ago (was v1.1.5), no matter if I disable "Use libraries; hide folders from This PC", uninstall the shell extension, update to the latest version - it won't work again. The only folders I seem to be able to rename are some automatically created folders like "<userprofile>\Pictures\Camera Roll" and "<userprofile>\Videos\Captures"