If you're using the Legacy postbit then by your own words it does show up
I'm unable to confirm this issue with Legacy postbit turned off, you may have a customised template preventing the buttons from showing up.
Ensure it has
Code:
$template_hook[postbit_end]
at the bottom of the template, above
Code:
<if condition="$show['profile']">
<!-- post $post[postid] popup menu -->
Fillip