Last line in file gets duplicated when saving#2751

I haven't yet created a simple repro of this (I may have more time to try to do so later today). But I figured I'd report since this started happening after the latest update a few hours ago. In short, after saving, the last line in the file is duplicated upon save. For example, if my file ends with the following: ``` ... x = [ 1, ] ``` Then once I save, my file turns into this: ``` ... x = [ 1, ] ] ``` My workaround is to just ensure that my last line is a comment so that it doesn't break my code, but this is a bit annoying.