Drivers on a transform strip not working

Sorry if this is in the wrong category. I don’t know if it belongs here cause of motion tracking, or in technical support.
I recently found out a way to do motion tracking in the blender VSE, but when viewing it in real time, and rendering an image, it works just fine. The drivers update and do what they’re supposed to. But when doing a final render of the whole thing, the drivers stop, and don’t update. It keeps the video I’m using in one place. Does anyone know how to fix this?

Can you share an example file?