Strange Issue Multi-Wan Configuration

[Ikyo]

I am not sure if this is related to upgrading to 25.7 or something that has changed by my mobile carrier.  I have a multi-WAN configuration setup to use Google Fiber as the primary connection and a mobile broadband connection for the secondary.  The mobile broadband connection is using a router that is providing a 129.168.12.x IP address.  The failover WAN is getting the proper IP and is able to ping that gateway.  When I SSH into the OPNSense box, I am able to ping the monitor IP (8.8.4.4) and have it go over the mobile WAN.  Then when I ping the other monitor IP (8.8.8.8) it uses Google Fiber.  I have let the ping run and I don't see any spikes in latency or dropped packets.  The Gateway monitoring is showing something totally different:

IPv4 250 192.168.12.1 8.8.4.4 20635.6 ms 129.2 ms 28.0 %

Has anyone experienced something similar?  Are there settings that I should update to correct this?

[Ikyo]

Any suggestions on what to do to fix or isolate the problem?