I also have this issue, although my villagers do not have beds. I tried removing and replacing the workstation blocks, and noticed that the villagers are not "claiming" them – e.g., the green particle effect does not appear. They may have lost their association to their workstations. The villagers also do not periodically "work" their workstation blocks since the 22w19a update. Confirmed with a brewing stand, grindstone, smithing table, and blast furnace.
UserNameIsTooLon
I also have this issue, although my villagers do not have beds. I tried removing and replacing the workstation blocks, and noticed that the villagers are not "claiming" them – e.g., the green particle effect does not appear. They may have lost their association to their workstations. The villagers also do not periodically "work" their workstation blocks since the 22w19a update. Confirmed with a brewing stand, grindstone, smithing table, and blast furnace.