All-new Ring Chime phantom rings

I have a Ring Doorbell 3 on the front and back door of my property. Today we started having the All-new Ring Chime making a sound indicating someone pressed the doorbell button but there is no notification on the Ring App. Checking the app shows no button presses and we can confirm no one at the door or pressed the button. All devices are well powered and well connected to the wifi. No existing doorbell chime is connected or used.