Ripple gets cropped when not given an explicit height

[tjsavage]

The ripple on paper-icon-button can get all funky with flexbox, and in a number of other contexts:

http://jsbin.com/yihezozaze/1/edit?html,console,output

[ronnyroeller]

+1

[notwaldorf]

I think this is working as intended. If you remove the flex, it behaves properly: http://jsbin.com/rifafe/edit?html,console,output. The flex should probably go on a container of the button, not the button itself (because you don't want to change the size of the button itself)