Images not displayed correctly in HTML5 Help

Hello, I am having an issue when converting my FM 2017 documents to responsive HTML5. Pictures are displayed center-aligned in the middle of the topic, instaed of being left-aligned. I found out that this is associated with conditional text tags. If the text has some conditional text, it shows the issues for pictures that are in that paragraph.

I am using FM 2017. I see the issues in old documents (FM 12) and new documents as well. The common factor seems to be the conditional text.

Thanks in advance,

Fabrizio