Potion Effects Don't Expire while Spectating Mob

To reproduce: Give yourself Night Vision (or any other effect) for a short time, spectate a mob, and wait till the potion expires. Upon checking your inventory, you will find that the effect duration is stick at 0:00.

The only way to fix this is to clear the effect using the /effect command (relogging just gives you the effect again). This is especially problematic with Night Vision since the screen will repeatedly flicker on and off.