Doorbell ringing mechanical chime multiple times rapidly on every press

I installed a Ring Video Doorbell Pro 2 yesterday (hardwired), following the instructions exactly, and everything seems to work exactly as it should - except for one thing: **Every time the button is pressed on the Ring doorbell my indoor (mechanical) chime goes nuts. It rings multiple times in rapid succession (maybe 15 times) and then stops.** It's like someone was pressing the button outside rapidly a bunch of times for a few seconds. Has anyone else experienced this issue? My house is brand new construction, and the chime is new with the house as well. Do I need to replace it with a digital (speaker) unit? All I did with the chime was install the ring pro power kit by connecting it to the FRONT and TRANS terminals (keeping the old wires there as well).