Define recently. I did a reset of my Pixel Watch 2 within the last month or so I think (to get Suica set up and work around GOS blocking it on the phone side)
Set it up with a """Japanese""" Pixel 6 Pro, transfered (without reset) to a USA-bought 9 Pro fold, then back to the 6P and a final time to the 9PF.
Fitbit sometimes get's stuck, and the whole pairing process is a bit of a mess if you used the device before (like, make sure to 'forget' the watch from your phone's Bluetooth settings if you're setting it up for the first time). But apart from that it works fine?