Suddenly cannot purge more than 30 files on a single request

Previously, it was 500 files. Is it a new limit for purging or a bug? Thanks.

API Documentation (find code 1094, it still shows 500 files):
https://api.cloudflare.com/#zone-errors

Example error response:

{
“result”: null,
“success”: false,
“errors”: [
{
“code”: 1094,
“message”: “Exceeded maximum amount of 30 files that can be purged on a single request.”
}
],
“messages”:
}

The documenation won’t have been updated in this case.