Ok, I see that. :)
But what about:
“I also tried to insert a standard WP-gallery in a Text Block, but this don’t work at all.”

This is just standard WP, and should work.

What’s happening:

When using Avia Layout Builder on page:
When I insert a WP-gallery into a Text Block it works great in preview mode, but when I publish it something goes very wrong. Instead of the images floating beside each other they just appear underneath each other. And more important; all form for linking is gone (have tried with both “Media File” and “Attachment Page” setting).

Code in preview mode:

<div id='gallery-1' class='gallery galleryid-379 gallery-columns-5 gallery-size-thumbnail'>
<dl class='gallery-item'>
<dt class='gallery-icon'><a href='http://example.com/wp-content/uploads/comics_cute_kitten_887085_o.jpg' rel="lightbox[379]" title="Pictures Test"><img width="180" height="180" src="http://example.com/wp-content/uploads/comics_cute_kitten_887085_o-180x180.jpg" class="attachment-thumbnail" alt="comics_cute_kitten_887085_o" /></a>
</dt></dl>
<br style="clear: both" />
<br style='clear: both;' />
</div>

Code when (the exact same) page is published:

<div class="gallery gallery-columns-5">
<dl class="gallery-item">
<dt class="gallery-icon"><img src="http://example.com/wp-content/uploads/comics_cute_kitten_887085_o-180x180.jpg" alt="" width="180" height="180" /></dt>
<dd class="wp-caption-text gallery-caption"></dd>
</dl>
</div>

When using “Default Editor” on page:
It works as it supposed to (lightbox an everything).

I have also tried to copy the gallery shortcode from “Default Editor” to “Avia Layout Builder” without success.

So any Ideas on how to fix this?

Additional information:
I’m running WP 3.9.1
Enfold theme: 2.7.1

Kind regards :)