Advanced Layout Builder debug mode not working properly

Hey,
I am trying to use the debug window in avia layout builder, but it is not working for me. Here is what I did to set it up:
– went to funtions.php and added

//set builder mode to debug
add_action('avia_builder_mode', "builder_set_debug");
function builder_set_debug()
{
	return "debug";
}

directly under
if(isset($avia_config['use_child_theme_functions_only'])) return;
as described here

– after that I created a new portfolio entry, clicked on “Advanced Layout Builder” and pasted my previous created code in the debug window

[av_section min_height='' min_height_px='500px' padding='default' shadow='no-shadow' bottom_border='no-border-styling' bottom_border_diagonal_color='#333333' bottom_border_diagonal_direction='scroll' bottom_border_style='scroll' scroll_down='' id='' color='main_color' custom_bg='' src='' attach='scroll' position='top left' repeat='no-repeat' video='' video_ratio='16:9' video_mobile_disabled='' overlay_enable='' overlay_opacity='0.5' overlay_color='' overlay_pattern='' overlay_custom_pattern='']
[av_one_full first min_height='' vertical_alignment='' space='' custom_margin='' margin='0px' padding='0px' border='' border_color='' radius='0px' background_color='' src='' background_position='top left' background_repeat='no-repeat' animation='' mobile_display='']

[av_heading tag='h1' padding='10' heading='Profilgleiter flach' color='' style='blockquote modern-quote' custom_font='' size='25' subheading_active='' subheading_size='15' custom_class=''][/av_heading]

[av_textblock size='' font_color='' color='']
<table>
<tbody>
<tr>
<td><b> </b></td>
<td>Nut 8, 10</td>
</tr>
<tr>
<td><b>Beschreibung </b><b>
</b></td>
<td>zur gleitenden Führung von Profilen mit Nuten;
ökonomische und verschleißarme Lösung,
z. B. für Flächenelemente</td>
</tr>
<tr>
<td><b>Material</b><b>
</b></td>
<td>
<p class="bodytext">Kunststoff POM</p>
</td>
</tr>
<tr>
<td rowspan="1"><b>Oberfläche</b></td>
<td rowspan="1">natur</td>
</tr>
<tr>
<td rowspan="1"><b>Befestigung</b></td>
<td rowspan="1">mit Blechschrauben</td>
</tr>
<tr>
<td><b>Liefereinheit</b><b>
</b></td>
<td>50 Stück</td>
</tr>
</tbody>
</table>
[/av_textblock]

[/av_one_full][av_one_third first min_height='' vertical_alignment='' space='' custom_margin='' margin='0px' padding='0px' border='' border_color='' radius='0px' background_color='' src='' background_position='top left' background_repeat='no-repeat' animation='' mobile_display='']

[av_image src='http://wordpress.p165068.webspaceconfig.de/wp-content/uploads/2016/07/00004706_w_2d_02.gif' attachment='233' attachment_size='full' align='center' styling='' hover='' link='' target='' caption='' font_size='' appearance='' overlay_opacity='0.4' overlay_color='#000000' overlay_text_color='#ffffff' animation='no-animation'][/av_image]

[/av_one_third][av_one_third min_height='' vertical_alignment='' space='' custom_margin='' margin='0px' padding='0px' border='' border_color='' radius='0px' background_color='' src='' background_position='top left' background_repeat='no-repeat' animation='' mobile_display='']

[av_image src='http://wordpress.p165068.webspaceconfig.de/wp-content/uploads/2016/07/00004707_w_3d_02_50f946689a.gif' attachment='234' attachment_size='full' align='center' styling='' hover='' link='' target='' caption='' font_size='' appearance='' overlay_opacity='0.4' overlay_color='#000000' overlay_text_color='#ffffff' animation='no-animation'][/av_image]

[/av_one_third][av_one_third min_height='' vertical_alignment='' space='' custom_margin='' margin='0px' padding='0px' border='' border_color='' radius='0px' background_color='' src='' background_position='top left' background_repeat='no-repeat' animation='' mobile_display='']

[av_image src='http://wordpress.p165068.webspaceconfig.de/wp-content/uploads/2016/07/00004708_p_app_01.gif' attachment='235' attachment_size='full' align='center' styling='' hover='' link='' target='' caption='' font_size='' appearance='' overlay_opacity='0.4' overlay_color='#000000' overlay_text_color='#ffffff' animation='no-animation'][/av_image]

[/av_one_third][av_one_full first min_height='' vertical_alignment='' space='' custom_margin='' margin='0px' padding='0px' border='' border_color='' radius='0px' background_color='' src='' background_position='top left' background_repeat='no-repeat' animation='' mobile_display='']

[av_table purpose='tabular' pricing_table_design='avia_pricing_default' pricing_hidden_cells='' caption='' responsive_styling='avia_responsive_table']
[av_row row_style='avia-heading-row'][av_cell col_style='']N[/av_cell][av_cell col_style='']A [mm][/av_cell][av_cell col_style='']B [mm][/av_cell][av_cell col_style='']C [mm][/av_cell][av_cell col_style='']D [mm][/av_cell][av_cell col_style='']E [mm][/av_cell][av_cell col_style='']Gewicht [g][/av_cell][av_cell col_style='']Teil-Nr.[/av_cell][/av_row]
[av_row row_style=''][av_cell col_style='']8[/av_cell][av_cell col_style='']11.5[/av_cell][av_cell col_style='']26.0 [/av_cell][av_cell col_style='']3.0[/av_cell][av_cell col_style='']15.0[/av_cell][av_cell col_style='']2.8 [/av_cell][av_cell col_style='']22.0[/av_cell][av_cell col_style='']093SM08S02[/av_cell][/av_row]
[av_row row_style=''][av_cell col_style='']10[/av_cell][av_cell col_style='']16.3 [/av_cell][av_cell col_style='']39.0 [/av_cell][av_cell col_style='']6.5[/av_cell][av_cell col_style='']19.0[/av_cell][av_cell col_style='']3.5 [/av_cell][av_cell col_style='']37.0[/av_cell][av_cell col_style='']093SM10S02[/av_cell][/av_row]
[/av_table]

[/av_one_full]
[/av_section]

– Unfortunately it is not showing up correctly, the layout of the header as well as the footer is totaly messed up

– When I play around within the layout builder with my previous entered content and update the post, it will be displayed correctly

Can you help me with this problem? I will add details in the private section of this post