Random chime ring with Ring Pro

My doorbell chime goes off randomly on occasion which is particulary irritating in the middle of the night, when this happens I don't get a notification on my phone, no video is triggered and nobody is at the door. I searched the community board for answers and found that my mechanical chime is not on the Ring list of compatible chimes. I bought a new chime which is on the list but the same thing happens. On one occasion when I walked out of my door it triggered the motion on the Ring Pro and I got half a chime on the doorbell then it stopped. I never had problems with my doorbell before I got the Ring Pro. There is more to this than simply having a doorbell chime on the list which seems to be the usual answer.