I have the Rift S, and sometimes when I start my app, the headset and controllers are "stuck" to the floor. In the headset, I can rotate to look around, but the position is stuck on the floor and won't move when I move, or get the correct height. Same with the controllers, I'm "inside" the controllers; I can rotate them, but the position is stuck to 0,0,0. In the Oculus app on the Desktop, I can see a red dot by my device that says "No headset audio", and that will sometimes go away as well (usually after a restart), but I'm not sure if that's related at all.
My app is using the Unity Vive Input Utility, with Unity 2018.4 (soon to be upgrading to 2019). Also, what's noticeable is that when I first put the head on after taking it off at any time, it'll take about 10-15 seconds for it to "wake up" and show anything in the headset view.
Has anyone else had this issue of the devices updating the rotation correctly, but not position?