<remove /> strange behaviour, with core acl="" attribute for layout file.

Layout.php

<?php
// This code allows all calls to <remove /> being ignored
// if a block with acl attribute is valid for admin user.
// Shall I keep it in LayoutCompiler? IMO, this looks more like a bug, than a needed feature!
foreach ($ignoreNodes as $block) {
    if ($block->getAttribute('ignore') !== null) {
        continue;
    }
    $acl = (string)$attributes->acl;
    if ($acl && Mage::getSingleton('admin/session')->isAllowed($acl)) {
        continue;
    }
    if (!isset($block->attributes()->ignore)) {
        $block->addAttribute('ignore', true);
    }
}