It happens rarely, out of the hundreds of times I've summoned, it's happened about a half dozen times. We also do it the same. Position the car in the same spot before summoning into the garage. There's never any issues summoning out of the garage.
What concerns me more, is that the X detected my 3, yet continued to head straight into it until I had to intervene. Came within 1 inch of hitting the car. Didn't try to stop, didn't try to turn away.