I tried the riding the FTP test (20 min) today and when it got to the free ride and turned off the ERG, I essentially could only free spin and could not apply any watts for the test. I ended the workout and tried to go back to the Terrain mode, but at that point my watts were stuck at a fixed 130 watts and it would not adapt to the Terrain mode again. I ended up stopping the ride all together and starting a new free ride where I was able to ride the Terrain once again. Was this a glitch or user error somewhere?