The Pixel 7 Pro is apparently the only device that has been affected. Some affected users say that they had their phone’s display replaced, though that doesn’t seem to be the root of the problem as the issue doesn’t affect only those who got new screens or replacement devices.
Since the problem cropped up less than a day ago, it’s not surprising that Google hasn’t addressed it yet and for now, there’s a user-proposed fix that appears to have taken care of the problem for many but not all users.
If this doesn’t solve the problem and you can’t live without a functioning fingerprint sensor, you may want to consider unenrolling from the beta program and go back to the stable version, though be warned that you may lose saved data this way.