Bing
Bing Penalty
take Bing Report errors & even warnings VERY seriously - even short/long titles & descriptions - bing will outright refuse to Crawl your site due to "low quality". It doesn't matter if Google indexes your site well - Bing has very different, very strict rules for "quality" (purely based on meta tags/markup) & will outright refuse to index any page that fails it's rules (below).
Bing Webmaster Tools
web console to config/review Bing crawl settings, reports & performance
Source: www.bing.com/webmasters/
References
Bing Webmaster Tools↔ web console to config/review Bing crawl settings, reports & performance