I have a lot of connection in/out my box while connection tracking is turn on. but I can not see them in /ip firewall connections. Below is my screenshot. I am using ROS 6.0rc6.

now there is V6.0rc9… or Pre-release of RouterOS x86 6.0rc10 (hotspot not working)
try it maybe it will fix the problem…
i don’t see the problem listed in the changelog.