The financial news site accidentally reported that Russia had invaded Ukraine Friday afternoon with a headline on its homepage. “Live: Russia invades Ukraine,” read a jarring headline on Bloomberg’s homepage at around 4 p.m. It stayed up for about 30 minutes, according to Olga Lautman, a Russian analyst who posted the message on social media. Users who clicked on the eye-popping story — which comes as Russian troops mass on the Ukrainian border and US officials warn of a potential invasion — were shown an error page. “I went on the site and saw the breaking news but knew it...