The fundamental issue is you are using the same IP on both ends of your S2S VPN.
The best way to fix it is to ensure only unique IPs are used on both ends of the VPN.
The gateway can only route an IP to one location.
Right now, the encryption domain for your S2S VPN includes that IP and VPN Routing takes precedence over any OS routes.
Short of changing the IP that is being accessed by your Remote Access clients, you will need to remove that IP from the S2S VPN Encryption Domain and include that IP in your Remote Access encryption domain.