Image does not float in live page

Trying to add an image with a caption and float it to the right of the text. The image displays fine in the editor, but when I update the page the float does not display correctly and the image breaks up the page text rather than the text wrapping around the image.

Screenshot of image in editor, correctly floating: https://www.dropbox.com/s/6r2l1ov5d952ng4/Correct.png?dl=0

Screenshot of image on page, not floating at all: https://www.dropbox.com/s/m9gmj9bjxygyk1m/Incorrect.png?dl=0

Using Lighthouse 101.5 and WP 4.9.9

Any ideas what’s gone wrong?

The page I need help with: [log in to see the link]