I tried on 2 different albums and I see no change:
During a slideshow, if you try to manually move to the previous or next image, the slideshow does stop but the lateral bar does not show anymore.
Note also that, on a mobile, when zooming into a photo ... this may restart the slideshow!
Edit - I noticed another issue related to this bug:
In fact, when moving to the previous or next image, you don't stop completelly the slideshow, as the "camera" icon to see the EXIF data does not show up either.
The only way now to browse manually the slides is to use the navigation by tags from the bar menu; but even so, the "camera" icon get displayed, but does not display any EXIF data when hoovering or clicking on a PC (but clicking is working on a mobile).
I tested it now with an auto-hiding sidebar, and true, it's hard to stop the slideshow this way. Could you stop the slideshow previously by manually moving to the next or previous picture? That's also not very intuitive. I believe there should be a pause button always visible during a slideshow, even if the whole sidebar gets hidden.
In the latest version, I made the previous/next buttons to not interrupt the slideshow, but rather just move to the previous/next picture and continue the slideshow with that image. Isn't this what visitors expect?
The face-tag and metadata buttons are really malfunctioning. I will look into this issue.