On creating a new invoice and filling in the Invoice Information dialog I am able to select a job that doesn't belong to the (already selected) customer when using the autocomplete feature of the job name text entry.  Using the Select... button shows only the jobs belonging to the customer.  If unnoticed the invoice is created with the customer silently changed to the owner of the (wrong) job.

This is easily corrected after reviwing the invoice but, the autocomplete dropdown should only present jobs belonging to the customer.