Investigate IE/Edge select rendering bug

This is a follow up from an issue related to change events on selects in IE/Edge (https://github.com/facebook/react/issues/4672). It looks like this is no longer an issue, but there's a visual regression on IE/Edge that might be avoidable. **Reproduction** https://codepen.io/nhunzaker/pen/qybxmz **Observation** From @jasonwilliams (https://github.com/facebook/react/issues/4672#issuecomment-404534681): > change and MouseUp both fire for me in Microsoft Edge 42.17134.1.0 @nhunzaker Although, the rendering of the select box is weird, it doesn't appear to expand when i click on it **We need to:** - [ ] Capture a GIF of the behavior for documentation purposes (this can just live in this thread) - [ ] Reproduce the test case outside of React, so that we can isolate the mechanics involved - [ ] Fix it :)