I haven't contributed much to Select2, a JavaScript library to replace native HTML select fields. And considering what happened to my latest contribution, just one of numerous issues managed unacceptably, I'm afraid that won't change.
As nothing was done to address concerns 20 days after the problem was brought to light, that will remain my last contribution to Select2, and I will not choose Select2 for any project. Which should not be a problem, as despite what the homepage still says, there are other options for advanced select fields, including Chosen.