Breaks with boxes module

Using inline boxes and button styles seems to generate the same problem as with the comment preview pages - divs are missing.

The only current solution I have found is replacing

if (isset($actions_start)) {

with

if (isset($actions_start) && (!isset($actions_end) || $actions_start == $actions_end)) {

But not sure why $actions_start and $actions_end gets different outputs some times. Maybe boxes does something wrong?