I'm having an issue with the thumbnailviewer drag and drop page reordering. For example, take a 4 page document, move pages 2 and 4 ~after~ page 3. I would expect the new order to be : 1, 3, 2, 4 but the actual results are: 1, 2, 4, 3.
Thank you for information. We reproduced the problem and have found bug in ImageCollection.MoveRange method. Bug will be fixed in shortest time. I will contact you shortly.
In version 9.1.0.17 we haveВ fixed fixed the bug in ImageCollection.MoveRange method and fixed the bug in algorithm that drag-and-drops group of thumbnails in thumbnail viewer. Please use version 9.1.0.17 and let me know if you will have any question or problem.