Ever volatile Snap shares fell 17% after market close as second quarter revenue growth was slower than it has been due in part to a mistake that made it cheaper than intended for advertisers to clear at auction. The company said its SVP of Engineering Eric Young is departing to pursue a new opportunity. “Unfortunately, in our efforts to improve advertiser performance, we shipped a change that caused some campaigns to clear the auction at substantially reduced prices,” said Snap’s earnings release. “We have ...