Yes. Busy shows the upvote button after the post body. They use a hand instead, like Facebook does.
Downvote is located in a menu. But as text, not as an icon. Before opening the post, that menu is shown as three dots near the upvote button and rewards and comments count. When the post is opened, the same menu is shown near the post title. The bookmark is also included in that pop up menu.
On the github topic. There is no need to wait until having the fix for it.
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