I'm writing this as a kind of a sanity check when dealing with PowerShell and exploring it deeper than I already have. Coming across several "its just not working at the moment" answers, I thought it'd be fun to catalog all the things I've found not to work as intended or at all.
Note: I will be updating this post as it comes. I might put update tags or I might not.
* Start-BitsTransfer does not work in non-interactive mode (source)