Just an FYI, when using the RC1 of TubePress Pro, I see the following oddity: when the shortcode below (without spaces) is the last line of a post...
[ tubepress mode="vimeoGroup" vimeoGroupValue="205417" ]
it is as if there is a missing closing tag. When additional content (even a single word on its own line) is added on its own line after the shortcode, everything goes back to normal. You can see an example here. If the last sentence of post content ("Click on each...") is removed, the border above the sharing buttons appears above the video player. You can remove that p element in Firebug and see what happens.
Is the conclusion that a tubepress shortcode can never be the last line of post content?