Spectator and disappearing spread command

When spectating a player, running the spread player command

/spreadplayers -380 210 0 1000000000 false NAME

while following them though there perspective, I get stuck in place, and trying to use the spectator menu to teleport to the player does not work. Dismounting does not do anything, and when teleporting to the player, they are still invisible. The only way to see them again it seems is to have them reconnect.