AvWijk on "if_is_home broken in version 4.1?"

I used to have a simple function in my theme which worked flawlessly in versions prior to Wordpress 4.1:

<?php
if ( is_home() ) {
    // show nothing on the homepage
} else {
    // show the breadcrumb on all other pages
    instant_breadcrumb();
}
?>

This piece of code is included in footer.php but is ignored now I updated to 4.1. The breadcrumb function is now always displayed!