[buttons] Click effect for buttons is broken in Firefox and IE

[jwarkentin]

Looking at the demos on http://material-ui.com for Buttons I noticed the click effect is broken in Firefox. The click effect works fine on Lists though, so there's just something weird going on with buttons in Firefox. It works fine on Chrome.

[abastardi]

I don't know if this will help with the diagnosis, but although the click effect does not work in Firefox on most of the demo buttons, it does actually work on the demo "Github" button as well as on the "Demo" and "Github" buttons in the middle of the home page and the Github icon button in the upper right of the home page (but not on the "Github" button near the bottom of the home page). It's not clear what is different about the buttons where it does work. All of the buttons where it does work are link buttons, but the "Github" button near the bottom of the home page is also a link button, and that one doesn't work.

Also, the problem appears in both Firefox desktop (Windows 8.1) and Firefox for Android (smartphone running Lollipop). It also appears in IE 11 on Windows 8.1.

[abastardi]

Issue title should be updated to indicate the problem occurs in IE as well.

[luisrudge]

This works on MS Edge, but not on IE11. There's a specific issue to track the IE issue #706

[aahan96]

Possible duplicate of #3850