I was going to say that it’s not happened since but it just happened again. Well, this time I had 43 reviews and after finishing the review process, it was loading forever, so I tried reloading the page, at which point the side bar came out and informed me of a network error. Neither submitting again nor reloading worked until I restarted my bunpro PWA (essentially restarting the browser, I guess). But after doing that, none(!) of the reviews I did were considered done. I did not pay attention to how many of my 43 reviews I had completed when the process finished, but since when I just re-did the reviews, there were a few in there I don’t recall reviewing earlier, so it could’ve been around 30 again, though I’m not sure.
Since bunpro usually saves correct reviews before the entire process is done, something seems to have silently failed there, since nothing was saved and I did not receive any error. I know a “failed to save; try again” error exists as that has happened to me in the past, but these times, no such error showed up.
Unfortunately, since I do most of my reviews on mobile I can’t just check the dev console like I could on PC.