After FBT calibrating my chest located wrong

Hi there, my skeleton in slimeVR and in SteamVR are same, after full reset looking fine (flat skelet like after full reset) and its looks same in VRChat BUT, after calibration in VRChat, chest of avatar moved forward, like chest bone is rotated to look up a bit, while all tracker showing thats they didnt change rotation in VRChat and SteamVR. And if I rotate chest tracker, so it looks a bit down, its looks fine, but thats not how it used to work.

Even more if I lock hip in VRChat and move, its fixes, but only while moving lmao, lock head does nothing and the only way thats somehow a bit fixed it was lock head and hip, but its break my waist. Nothing changes if I use 7-5 trackers. So looks like there is a problem on VRChat side. I hope you can help with this.

The only way to “fix” it is to put something under tracker while calibrating in VRChat, so it looks up a bit, and after calibration put it away. Its just a crutch and need to be fixed normaly

Videos of this problem:

(not an avatar issue, not a steamVR, Virtual Desktop, Pico4 issue, tried everything everywhere)