I'm experiencing a similar problem.
However, in my case, I am actually uploading larger files (between 30MB and 130MB), and my uploads succeed (for the most part).
The Upload progress bar, in both cases, reaches 100% and remains green. However, the Completed notification does not appear (even after waiting ~4 minutes after the progress bar had reached 100%). The "OK" button to acknowledge the successful upload never appears. After refreshing the Browser, the document appears to have been uploaded successfully.
However, in some cases, I decide to hit refresh somewhat sooner (~2 minutes after 100% status is reached). In this case, the document does NOT appear in the folder (upload did not complete successfully.
My question is; is there a known issue for successful file uploads, wherein the file uploads completely, but Alfresco fails to notify the user that the job has completed?
Is anyone else experiencing this issue?
Thanks,
Fernando