I am working on a version 9.10.4 site and the Upload Manager does not seem to work correctly. If I select multiple files for upload, in this case, multiple copies of the same Powerpoint presentation, the upload stalls until I remove all but one of the files from the queue at which point it completes. Dragging and dropping the same files for upload works without an issue. I have attached a recording that demonstrates the issue. Are there settings that govern the functions of the Upload Manager that would be different than those for drag-and-drop uploads?