Clicking noise during vibration when using iPhone 12 Mini

Under very specific conditions, I have found that my iPhone 12 Mini would include a short abnormal 'clicking' noise when vibrating (due to a push notification or any other reason that the phone may vibrate).

Essentially, as long as the phone has been in a low-power state for long enough, for any vibration that wakes up the phone (or occurs at the same time as the phone waking up), the vibration would include a short clicking noise much sharper sounding than what haptic feedback could provide. For example, after about 30+ seconds with its screen off, if my phone were to get a notification from Instagram, the vibration from it would come with the strange click sound.

I've noticed this issue occurs consistently with notifications that use the default flat vibration pattern (not accented) that comes with non-stock apps. However, I have also observed the clicking sound occurring from the charging indication vibration if the phone were to wake up just after a restart. As said before, the issue specifically arises from vibrations that occur when the phone is waking from some sort of low-power state.

This issue is especially strange considering it doesn't seem to be independent to any particular iOS version or hardware. I've had my previous iPhone 12 Mini replaced with an entirely new device for this exact issue, yet the issue persists. Even on a clean install of iOS following a DFU restore, I find that the clicking issue persists under the exact same conditions. This issue has also persisted on every iOS version that my phone as been updated to (up to 14.3).

I have reasonable suspicion to believe this is not an intended feature considering I've never experienced such a thing happen on my previous iPhone 7 running iOS 14. Perhaps the issue is ultimately inconsequential, but I worry it may damage the vibration motor/haptic engine the more it occurs. If anyone has information on a possible fix, please tell me!

Thanks!