Message obstructing the sentence.
Since I can't see the sentence I have to switch from keyboard to the mouse. It's only a small annoyance but if you find the time please fix it.
similar issue: https://www.duolingo.com/comment/2790899
I am using firefox 29.0.1
Those popovers appear on hover. Are you seeing them when you aren't hovering on the button?
Sorry for the misunderstaning. My screenshot program automatically removes the cursor from the screenshot. It only appears when I hover over the button.
I apologize for bothering you again.
What I meant by this thread is could you make that the popover appears only after we have actively used our mouse to hover over the button, because currently it appears even if we have accidentally left our cursor there.