See attached image
I have a single layer, with a single spline on it. I set link to track to “none” because the camera is pushing in and I just want it to follow the texture on the ground to get the track and not immediately follow the track offscreen. The ground is basically a grid of texture, so I don’t think it’s losing that, but I tracked forward and and the planer surface and perspective grid completely disappear on frame 42.
It can keep tracking for another 20 or so frames without the planer surface showing and eventually stops with a “Tracking failed: Couldn’t decompose drift compensation matrix”
I tried without removing the “link to track” and fails too.
Also attached source movie