I’m very happy to report that this issue seems resolved now, at least for myself. Hopefully it’s also resolved for anyone else that experienced the issue.
Last Thurs, March 5th I enabled Snapshot for all cameras except my DB Pro. Friday, the 6th, after support confirmed my DB Pro firmware is up to date (despite showing firmware version 2.2.00097), I re-enabled Snapshot on my DB Pro. Snapshot is set for 1 minute intervals on all cameras.
Hopefully I’m not speaking too soon, but all is well. All recorded motion events are still 1:05 to 1:07 in length, and all play the pre-roll prior to the motion event starting.
When I wrote my original post, it only took about 3 days before the problems started on my DB Pro, and about 6 days on my (wired) Stickup Cam.
I was honestly surprised to get an email out of the blue from Ring, from over 2 months ago to follow-up on the issue. (I thought I was simply reporting the problem, and that was it) Thank you Ring for acknowledging this was a problem, following up with me, and correcting the issue!