Paper is good at managing collaborative editing, but I find it awful as a general editor: instead of working with what the browser provides, it tries to be clever and implement most things from scratch, and like almost everything that ever takes that approach, fails painfully, sitting firmly in the uncanny valley. (It definitely has various nice features that ameliorate this pain, but I still don’t like it at all.) Over the last year or so I have reported I think five or six distinct bugs (in three messages, I think), mostly ones that are really annoying for me, and I have not heard back from them, nor, to the best of my knowledge, have any of them been fixed. The one I hit the most regularly is selecting text at the start of a paragraph, and starting typing; for example if capitalising a list that someone else typed in lowercase. What you type goes onto a new line, rather than the same line. (I do not recall any of the other bugs I’ve reported off-hand; because I don’t actually use Paper all that much.)

And ugh, hanging punctuation is just a bad novelty that is of dubious value in prose, and strongly negative value in other forms of content. I believe it has no place in something like Paper—it feels to me like one of the developers came across the concept and thought “that sounds cool, can I make it work in Paper?” (and did a decent, though not brilliant, job of it, I admit) without stopping and thinking whether they should do it.

Oh, and Paper is so slow to load, just like Dropbox is these days. I only open either when I have to, they’re so slow to load and resource-heavy.