Yes, I updated to watchOS 8 beta 1 and then did the reset due to another problem and a new pairing. Since then if have the Find my error message on all my devices. So at least in my case it was triggered from watchOS 8 beta 1. Now on Beta 2, whenever I shut off my Apple Watch and power it back on I only get presented with the default watchface, all other Watchfaches are not synchronized - they are still visible on the iPhone app but not on the Watch. The only way to fix this is to reset the Apple Watch, do the paring, install the beta profile right afterwards and then do the rest of the setup… so most likely this is another issue with watchOS 8 beta 2…