Hi, i uploaded a small video showing the behaviour. Also, Mary is right and we're not mind readers, so here's the code. I cleaned up a little bit my own mess and this is what i'm using right now
html/php - frontpage.php
<header id="moodleheader" class="clearfix">
<!--new header-->
<div id="fixxxer-2" class="container">
<div id="header_section_left">
<div id="header_section_1" role="banner">
<a href="<?php echo $CFG->wwwroot;?>">
<div id="logo-main-forward-2" class="logo-main-forward-2"></div>
</a>
</div>
<div id="header_section_2">
<nav class="breadcrumb-nav-2" role="navigation" aria-label="breadcrumb"><?php echo $OUTPUT->navbar(); ?></nav>
<div class="breadcrumb-button-2"><?php echo $OUTPUT->page_heading_button(); ?></div>
</div>
</div>
<div id="header_section_right">
<!--<div id="section_test3"> section 3 </div>
<div id="section_test4"> section 4 </div>
<div id="section_test5"> section 5 </div>-->
<nav role="navigation" class="navbar <?php echo $navbartype; ?>">
<!--<div class="<?php echo $container; ?>">-->
<div id="moodle-navbar" class="navbar-collapse collapse">
<?php echo $OUTPUT->custom_menu(); ?>
<?php echo $OUTPUT->user_menu(); ?>
<ul class="nav pull-right">
<li><?php echo $OUTPUT->page_heading_menu(); ?></li>
</ul>
</div>
<!--</div>-->
</nav>
</div>
</div>
<!--end new header-->
<!-- End Frontpage Content -->
</header>
the funny thing is that in the main page is working correctly now, but the same code...
html/php - default.php
<header id="moodleheader" class="clearfix">
<!--new header-->
<div id="fixxxer-2" class="container">
<div id="header_section_left">
<div id="header_section_1" role="banner">
<a href="<?php echo $CFG->wwwroot;?>">
<div id="logo-main-forward-2" class="logo-main-forward-2"></div>
</a>
</div>
<div id="header_section_2">
<nav class="breadcrumb-nav-2" role="navigation" aria-label="breadcrumb"><?php echo $OUTPUT->navbar(); ?></nav>
<!--<div class="breadcrumb-button-2"><?php echo $OUTPUT->page_heading_button(); ?></div>-->
</div>
</div>
<div id="header_section_right">
<div id="section_test3">
<div class="breadcrumb-button-2"><?php echo $OUTPUT->page_heading_button(); ?></div>
</div>
<!--<div id="section_test4"> section 4 </div>
<div id="section_test5"> section 5 </div>-->
<nav role="navigation" class="navbar <?php echo $navbartype; ?>">
<!--<div class="<?php echo $container; ?>">-->
<div id="moodle-navbar" class="navbar-collapse collapse">
<?php echo $OUTPUT->custom_menu(); ?>
<?php echo $OUTPUT->user_menu(); ?>
<ul class="nav pull-right">
<li><?php echo $OUTPUT->page_heading_menu(); ?></li>
</ul>
</div>
<!--</div>-->
</nav>
</div>
</div>
<!--end new header-->
<!-- End Frontpage Content -->
</header>
is not, so, in the video you will see a blue box where the breadcrumbs should render, and well, they are not, even though the css rules are putting them there, as well as the code above.
as usual, any help would be much appreciated!!
Thanks