Firefox preserves opened tabs on close/re-open, and so does Notepad++/Sublime (and for those, it works even for tabs you've never saved as files). And let's be honest, losing most of those browser is inconsequential.
So while I get the "I just want sleep to work, dangit" attitude (it really should just work, to be honest) the fact is that it barely does work. Seriously, it took this long to realize that VRAM contents may not fit into RAM entirely, so powering down the drives that hold the swap should probably be postponed to the last moment.
That won't restore my 3+ neovim instances, including loaded buffers, associated undo trees, tabs, and splits. Neither will it restore the various PDFs I have open, the file browser instances pointed at specific locations, nor the containing window and desktop layouts for all of that.
It's pretty unbelievable when you think about it. The majority of mainstream progress on application state management has taken place in mobile operating systems and essentially amounts to the expectation that you won't lose data if and when your process is unexpectedly forced to terminate without user interaction. Forget actually picking up exactly where you left off.
And as long as I'm complaining. All of my sshfs mounts tend to break if I sleep-wake as well. Remounting them generally doesn't fix programs that were using them (for obvious reasons) - I usually have to manually close and reopen all of that.
So while I get the "I just want sleep to work, dangit" attitude (it really should just work, to be honest) the fact is that it barely does work. Seriously, it took this long to realize that VRAM contents may not fit into RAM entirely, so powering down the drives that hold the swap should probably be postponed to the last moment.