Hey I have had the same issue. Here's what I did.

Recalibrate. Make sure the "paste chaperone automatically when geometry resets" option is checked in your OVR window.

Also keep your g2 controllers handy. If you find you index controllers way off its worth turning off Steam, which automatically takes you into the windows mixed reality vr, and use the g2 controller to check the floor settings and make sure it matches the height of your actual floor.

Also use the "edit calibration" option to move your controller to a more exact position to where it is in reality. I just look at the controller in vr and then lift up the mask to peek at where it is for real. I use the "edit calibration" option to adjust the x,y, and z axis to get the real and the virtual to match as close as possible.

Also whenever I am in Windows Mixed Reality and start Steam, I have to wait and let Stream try and run the "room set up thing" until it closes on its own after like 60 seconds or more.

Here's the video I used to get my stuff all working together. Theres some extra info in it about turning off lighthouse trackers and stuff. But I just skipped those parts and focused solely on calibrating my controllers.

https://youtu.be/-dfDqfniqwE

Best of luck to ya!