Just to let you know I’ve resolved this issue, but only by rolling the SiteOrigin Widgets Bundle back from 1.18.1 to 1.17.11.
As above, the issue is that all the project / portfolio pages on my main business website suddenly gained a large amount of whitespace below any Image Slider; that space was equal to the height of the images placed.
As my project pages have white backgrounds, it was only when I switched on a red background to the row that the slider sat in, that I could see previous and next nav buttons had been added directly below the slider and a distance blow that – roughly equal to the height of the image above – a bulleted horizontal nav representing all of the images in the slider.
This issue only appeared when I made the update to 1.18.1.
I have over 100 project pages that use this widget with over 1000 images in play. All have been created over the last three years. None appear to have any form of navigation enabled, and I’d not made any changes to the pages. So the sudden change / bug was a scary one!
For background I’m using the ThemeTrust ‘Create’ theme (v 2.3.0 latest), SiteOrigin PageBuilder (2.11.8).
A typical portfolio / project page can be found here: https://www.coverness.com/project/the-cadwaladr-quests/
Hope that helps :-)