The connection doesn't switch from LTE/5G to Wifi automatically (Warp/iOS)

The iPhone’s Warp client fails to switch from the mobile network to Wi-Fi automatically, even after a prolonged period. Consequently, users continue to consume mobile data from their cellular plans instead of utilizing Wi-Fi.

This issue has not been encountered with other VPN clients on iPhones in the past. Is there a setting within Zero Trust that can be configured to compel the switch from LTE/5G to Wi-Fi?

Is there any other solution for that problem?