IE9 area selector shows up beneath tile layer

[bdon]

I know everyone hates this kind of issue, but does anyone know if it's possible to get this to work in IE9?

It does look like the area selector shows up right when the page loads, but then the tile layer covers it. There's no errors or anything.

(using https://saucelabs.com to test)

[bdon]

This seems to work, but I don't know if it is the simplest or most compatible fix:

.leaflet-areaselect-container {
  position:absolute;
  width:100%;
  height:100%;
  z-index: 99999;
}