Mysterious ghost IPsec VPN entry on IPsec Status page

[TO2020]

I run pfSense v2.5.2 on two devices in a CARP setup with dual WAN.
I have 5x IPsec VPN tunnels, all in VTI mode.
While all 5 tunnels are established and passing traffic, on the IPsec Status page I have a 6th entry in a Disconnected state, which is a duplicate of an a already established tunnel.
If I click Connect VPN, nothing happens, for obvious reasons.
The appearance of that entry seems to be a bug.
I did see this https://redmine.pfsense.org/issues/11486
but not sure if this is the exact issue I am facing.

Some guidance would be greatly appreciated.

/Thomas