In method placementKey() of class eZTemplateBlockFunction in lib/eztemplate/classes/eztemplateblockfunction.php a variable $input is being build in three steps, with third once overwriting values from first and second:

           $input = $placement[0][0] . ',' . $placement[0][1] . "\n";
            $input .= $placement[1][0] . ',' . $placement[1][1] . "\n";
            $input = $placement[2];

While I haven't seen any troubles caused by it yet, it seems to be a bug to me, and hence this report and path.

Affects both eZ P v 3.9.0 and v 3.8.6. I haven't checked for it in 3.9.1rc1

Steps to reproduce

Spotted while browsing the code, no known syptoms.