http://o54hon2e2vj6c7m3aqqu6uyece65by3vgoxxhlqlsvkmacw6a7m7kiad.onion/en/blog/2021/9/2/limitations-split-tunneling
Examples of software that could collide with the split tunneling functionality include proxy software, firewalls, and similar security software. Sometimes the collision is caused by using overlapping configurations, other times, merely having the applications installed simultaneously could result in collisions.