I was trying to copy a dozen video files (Steve Wilkos Show, I know, don't judge me!) from my Samba server to my desktop. There were several files with the same name and the same filesize, so I clicked "skip" on those. This appeared to throw the "completed" percentage way off.
I've had a few other quirks (such as being unable to overwrite an existing file with the same name during a transfer) but others have posted about those issues.
That said, overall, I'm very happy with 3.5B2, it's been a lot better than the previous 3.26.
Customer support service by UserEcho