Thanks all for replies.
Luckily, the data I lost in this case is all replaceable and it’s only a headache on a day that wasn’t going my way. But, I thought it best to bring this up because the next person to experience it might not be able to replace the data.
In my case, it was this thread that came up, with the highlighted text being scraped by google search (thanks, Google).
Admittedly, I wasn’t as careful as I should have been (aforementioned bad day and all). But if it can happen to me, it can happen to others, so I definitely support the bare minimum solution being to create a support page that is direct linked from the UI when this error occurs.