Can't turn off PPTP VPN Server in 3.0.0.4.374.39

Hello,

I'm using Asuswrt Merlin 3.0.0.4.374.39 on my Asus RT-AC66U. The VPN settings apparently changed recently. Even though I turn off the VPN server (VPN->VPN Server, Enable VPN Server: Off), it still shows that it is running on the VPN Status page:

"PPTP VPN Server - Running"

How do I disable the PPTP VPN Server?

Also, it would be great to be able to only turn on an OpenVPN server, but disable the PPTP server. Can this be done?

UPDATE: I checked both instances (Server 1, Server 2), and even when turning off both instances, it still shows PPTP VPN Server running.