Ghost powerup dropping in the last 200m/600 ft

Not sure if this is a bug or working as intended. I had a ghost powerup on the last lap of a crit city steering race, intended to use it to sneak around the final sharp turn on the inside line. Watching my playback I realized my ghost powerup turned off at 600ft remaining (right before the turn).

I found a Zwift Insider post where Eric shares a video of him using the power up at the same place, and while it’s very close, I notice his has about a second left at the same spot and drops off 200 meters before the finish.

Is this a bug, or is it intended to prevent the powerup from being used through the finish line?