Hi,
If you activate the "Display view files" setting of the HikaShop configuration page, you can see that the brand is displayed inside the product / show_block_dimensions view file.
In the code you copy pasted, this view file is displayed by the code:
<!-- DIMENSIONS -->
<?php
$this->setLayout('show_block_dimensions');
echo $this->loadTemplate();
?>
<!-- EO DIMENSIONS -->which is positioned just after the price area. And if I check the page of your URL, the brand is indeed displayed next to the price on the product page.
And if you check the HTML of your page with your browser inspector tool, you can see that the DIMENSIONS and EO DIMENSIONS HTML comments are around the WEIGHT, WIDTH, LENGTH, HEIGHT and BRAND areas:
i.imgur.com/HgOAkn7.png
So, first, I don't think it has anything to do with the update, and it seems that you're confusing something somewhere because the way I see it, everything matches.
Thus, if you want to move the brand display below the description, you want to drag & drop the "DIMENSIONS" block below the "DESCRIPTION" block in the view builder of product / show_default.