I would like to report a few UI/UX issues for the votes tooltip on the busy.org (beta) website.
I tested on Opera Browser/Windows and on a Nexus 7 (2013) device with Chrome.
Here is how the tooltip looks on a smaller screen, here 488px, notice the bottom arrow of the tooltip is directly above the 'Comments' icon, not the 'Vote' icon:

When on the top half on the screen, the tooltip is overflowing on the top outside the screen space. It might be a good idea for it to show below the 'Vote' icon in such cases. The issue is represented here:

When one clicks the 'vote number' text, a modal appears with more details about the votes, but the tooltip does not dissapear:

I agree that when you move the mouse the tooltip dissapears, but on mobile devices you do not necessarily move the finger, so, when you tap the 'vote number' the tooltip will stay over the newly appeared modal, even if you swipe to scroll. It wil stay over the modal until you tap again somewhere.
Here is how it looks on a Nexus 7 (2013):

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