Geo Steering custom rules

I’ve set up geo sterring on our load balancer setup within cloudflare and it all works correctly, people are steered towards the server specified in the setup. However I’m tearing my hair out trying to find a way to prevent geo steering on a specific URL

The url ends with /clientarea.php and no matter how I set it up, it always tries to geo steer the request.
This person No ticket support for paid Load Balancing service? seems to have the same issue where the rules seemingly don’t apply.

Has anyone managed to get a specific URL to bypass geo steering (or be pointed to a specific origin server)