Couple ip rules and you can connect to ssh while openvpn runs!
When you run
ssh sessions get disconnected and you can’t connect anymore.
ip rule add from x.x.x.x table 128 ip route add table 128 to y.y.y.y/y dev ethX ip route add table 128 default via z.z.z.z
Where x.x.x.x is your public IP, y.y.y.y/y should be the subnet of your public IP address, ethX should be your public Ethernet interface, and z.z.z.z should be the default gateway.