A guy in my club had a Great Planes Cherokee that did the same thing. That plane would stick to the ground like a F1 race car. Must be some thing with the wing incidence.

This rubber plane from 1936 had the same trait. When the motor was fully would and the model hand lunched it would fly as normal. However if it was lunched from the ground it would roll on the ground for 3/4 the motor wind then leap into the air vertical until the motor unwound then stall and crash.