Yup, definitely a bug in the stock code.
The fix
in templates/default/admin/view_subscriptions.tmpl
FIND:
<td class="stdautorow autobottom autoright">
<a href="{$config['BASE_URL']}/admin/showuser.php?uid={$v['uid']}">{$v['user']}</a>
</td>
<td class="stdautorow autobottom autoright">
{$v['active']}
</td>
<td class="stdautorow autobottom autoright">
{$v['start']}
</td>
<td class="stdautorow autobottom autoright">
{$v['end']}
</td>
<td class="stdautorow autobottom autoright">
<a href="{$config['BASE_URL']}/admin/edit_subscription.php?group={$v['group_id']}">{$v['name']}</a>
</td>
<td class="stdautorow autobottom autoright">
{$v['invoice_no']}
</td>
<td class="stdautorow autobottom autoright">
{$v['status']}
</td>
<td class="stdautorow autobottom">
REPLACE WITH:
<td class="stdautorow colored-row autobottom autoright">
<a href="{$config['BASE_URL']}/admin/showuser.php?uid={$v['uid']}">{$v['user']}</a>
</td>
<td class="stdautorow colored-row autobottom autoright">
{$v['active']}
</td>
<td class="stdautorow colored-row autobottom autoright">
{$v['start']}
</td>
<td class="stdautorow colored-row autobottom autoright">
{$v['end']}
</td>
<td class="stdautorow colored-row autobottom autoright">
<a href="{$config['BASE_URL']}/admin/edit_subscription.php?group={$v['group_id']}">{$v['name']}</a>
</td>
<td class="stdautorow colored-row autobottom autoright">
{$v['invoice_no']}
</td>
<td class="stdautorow colored-row autobottom autoright">
{$v['status']}
</td>
<td class="stdautorow colored-row autobottom">
DETAILS: "colored-row" was missing from the css class for those rows.