Investors were focused on slowing growth instead of Bill's great quarterly report.Bill Holdings (BILL 1.99%) shares dropped 16.5% last month, according to data from S&P Global Market Intelligence. The financial software provider delivered a stellar quarterly earnings report, but investors were distracted by some underlying data. The company's outlook suggests that it will continue to experience slowing growth and net losses, which has the market feeling hesitant.Strong quarterly results couldn't keep invest ...