Since upgrading is a huge part of the game I prefer to send my sims to rummage for parts than to purchase them. I created another brand new save after the update and the adults still cannot rummage in public trashcans. The children can find toys, the adults cannot rummage. I selected another family and sent them to Oasis Springs.
I created a new save early May 2021 after the April update, still having the problem. It makes my saved game unplayable as the family I have lives off the grid and resorts to rummaging to make money and have food.