GitHub has 11,995,200 open issues
Sorted by +1s: https://github.com/issues?q=is%3Aopen+is%3Aissue+sort%3Areac...Here are the top three:1. Contribution graph can be harmful to contributors (https://github.com/isaacs/github/issues/627)2. proposal: generic programming facilities (https://github.com/golang/go/issues/15292)3. Proper tabs for open files  (https://github.com/Microsoft/vscode/issues/224)Can't say I'm terribly surprised!