Simple DOwnload Monitor fancy boxes not working with themify builder

Hi just updated a test version of a website to WP4.7.3 and also updated Simple Download Monitor from 3.3.4 to 3.4.0. Fancy boxes are no longer working as expected.
The website is built using the Themify metro theme (v2.0.7-latest version) and the Themify framework for page-building(v3.1.4).
The themify framework lets you build pages with column elements. Hitherto SDM has worked perfectly with column elements that are one third or one quarter of a page width when using the ‘Fancy Box’ version of the shortcode.
However, the latest version is completely throwing the presentation. To my (fairly non-technical) mind it looks as though the shortcode is taking the column width and trying to display a box one third or one quarter of the column width. This ends up squashing the box and associated title text gets displayed well outside the box boundaries
If I do not use the Themify Framework builder – and just use the standard WordPress page content entry system – then the shortcode works fine.
Do you have any suggestions I might try to rectify this (other than re-build the website!). I can’t send you a link as test version of the website is on a local pc.
Thanks very much