More than 70% of automation script failures are phantom failures. Tests report errors when the underlying functionality passed. A button moved three pixels. A modal animation took 50ms longer. The environment loaded fonts differently. The script breaks. The product works fine.
Watch what happens. Engineers investigate for hours, find nothing broken. They patch the script. Next week, different phantom failure. Maintenance becomes a full-time job. Teams stop trusting alerts. When most failures mean nothing, all failures mean nothing. You built automation to catch bugs faster. Instead you built a system that cries wolf professionally.