In the slide show, the panorama is unfortunately only displayed briefly and incompletely due to the normally short display time.
The skin has no way of detecting that the "show" is over - the player isn't sending back a "finished" code, the way an embedded video does. In fact, the skin doesn't know what that embedded page is doing at all - it could be
anything.
I also like your test album Tiger "Louvre als Panorama" very much. How did you define the image height so high that it gets a longer display time?
I changed only one thing from the default settings. The original of that image is 9974x2280. I set the image bounds to 10000x800. The slide image generated by the jAlbum core is 3500x800 (so image bounds of 3500x800 would be big enough).