Approval records are not displayed to users who do not have approver_user role
There is a slight change in the code of the 'Approvals' widget in London. In line 128 of the Server Script of the widget:
data.showApprovals = gs.getUser().hasRole('approver_user');
According to this code, data.showApprovals will be true only if the user has 'approver_user' role. it is an expected behavior due to the change in the Approvals widget.
Add 'approver_user' role for the user