Getting an error that valid JSON is invalid

I’m seeing the same behavior, but it lets me save if instead of directly putting an array I put it in an object it works. Basically this breaks:

[
  "a",
  "b",
  "c"
]

but this works:

{
  "items": [
    "a",
    "b",
    "c"
  ]
}

Seems like a recent bad change

should be fixed now; sorry @remote_mule @excessive_blackbird @perfect_cow!