Button text overflows when pressed

[summatix]

When the text is too large to fit into the button, it's hidden like so (full text is "start free crash course"):

except when the button is pressed:

Setting overflow: hidden on the element prevents the button text from leaking outside.

[jessemonroy650]

I can confirm this issue. I can also confirm this is happening on Hybrid Mobile Apps (Phonegap/et al.).
Would you guys like to know browsers and devices effected?

@summatix, my work around is to reduce or change the string in the button.