Activated my daily incense today while my signal was poor and, after a delay, somehow ended up activating two incenses simulataneously. It didn't cause double the amount of spawns to happen however, nor did it even spawn the regular amount, as I got no spawns from the incenses whilst this glitch was in effect. Restarting the game made it correctly display only one incense was active and it began creating spawns again.
by MrSpaghettios5000