Bad request when Proxy is on


I’ve deployed an API application with GET, POST, PATCH methods allowed. .
But when I use PATCH with Cloudflare proxy enabled I have “400 bad request” with this response body:

“\r\n400 Bad Request\r\n\r\n400 Bad Request\r\n—cloudflare\r\n\r\n\r\n”. This looks like Cloudflare append this error before API.

If I disable Cloudflare proxy on my domain/A record, PATCH is working.
What can I do?


2 posts were merged into an existing topic: My API’s PATCH returns “400 Bad Request” when Cloudflare Proxy is on