[francescovv]

OP touches on a slightly tangential topic:

  This is kind of meta because I’ve turned this
  autocomplete feature off, I’m sure of it.
  Did I just do it on my phone? Did my wifi
  blip so the AJAX didn’t work? I certainly
  didn’t turn it on.

This strike home hard for me, as a pervasive problem. So many tech companies conveniently "forget" about user preferences all the time.

For example, on my kobo e-reader, I'm positive I've disabled auto-update. And yet, one day few weeks ago it auto-updated and the new version stopped displaying side-loaded .epub files (from project Guttenberg). No rollback, no appeal. Seller's 2-year warranty has recently expired. Now essentially I have a modestly expensive semi-brick that will only let me read two titles purchased via kobo store, and nothing else

[tomglynch]

I have an issue with something similar. I often get emails from email lists where I'm pretty sure I have previously unsubscribed. But I can never be sure if I actually did and they're ignoring it, or if I unsubscribed from something else.