Okay, so today I was messing with my version of faforever.faf to make the next FAF patch. I didn't back it up because I figured hash + autodownload would take care of it. Instead of that, FAF decides to get stuck in the downloading window... and never downloaded the patch. I had to Alt+F4 to close the "this window will stay open until path is done" window and it utterly failed to download any patch, even though the progress bar showed up and progressed to completion.
This is at least the second lobby update that I am aware of to break this, imo, very important feature.