Yeah, it's irritating.Still broken - if you have a different photo for the lock screen and home screen and reboot, then login, the home screen uses the lock screen photo. To get the home screen photo back, I need to customize, select home screen, set it to pair with the lock screen, done, then go back and customize the home-screen to use the photo instead. Been this way all of this beta cycle.
If, when the phone reboots, you give it a while (a few seconds? I've not done much testing) before swiping up then it seems to work ok.
The fix I use, when I don't do the above, is to pick another lock-screen (I have one for my DND focus mode) and then pick the original one again. That fixes it until the next reboot.