I have experienced this many times in MacOS after deleting a file/folder and replacing it with some other version, like one downloaded from an email. After a while, I realize that I'm working from ~/.Trash and the attachment I just sent didn't include the changes I had been making for the last hour.
I've had this happen in bash also, where I modify some script in an external editor then try to run it, only to realize that I'm running from the trash, even though the bash prompt naively tells me I'm in ~/SomethingNotTrashFolder.
Intuitive would be "Hey, this file you're working on was just moved to the trash. There's a 99.9999% chance you don't want to do this." rather than hoping the filepath is visible, and noticed by dumb chance, in the title bar, since not many people periodically glance at the file they have open to verify it's still the file they want open.
