The new version of the PhotoSwipe skin contains next new features:
If check-mark "Slide page thumbnails" in the new "Slide page thumbnails" group on the Slide page - layout tab has been set, the light-box will show thumbnails below the slide image.
You see in that case a new button in the toolbar to hide or show again the thumbnails.
By setting check-mark 'Show Thumbnails on the slide page with:', in the 'Slide pages thumbnails' group, you can display the thumbnails at the bottom of the slide page. The size of these thumbnails are determined by the next two fields.
The currently displayed image is displayed with a border in the thumbnails strip. You can click on another thumbnail to open the corresponding image in the light-box. Scroll vertically through the thumbnails if there is no room for all thumbnails in the displayed row.
If there is not sufficient free space available below the slide image, the thumbnails strip may overlap the image and/or description of the image. However the tool-bar contains a button to hide or show the thumbnails strip, so by clicking on that icon, you can toggle the display of the thumbnails to reveal the description.
Use the settings shown in the screen shot above to get a maximum of free space. So clear the check-marks 'Show description in gradient bar' and 'Use whole view-port …' and set check-mark 'Prevent that the description overlaps the image'.
To prevent that you get small portrait type of slide images on a smart-phone in landscape mode if large descriptions are used, it is recommended to set both check-marks 'Show description in side panel …' and 'Unless there is more space undr the photo'.
To see an example, open this album made with the settings displayed above.