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Changes between Initial Version and Version 1 of Ticket #31577, comment 3

initial	v1
2	2	> I believe what needs to happen is `Content-type: application/json` needs to be returned, correct? If you are using the corresponding PHP API (`wp_send_json_success()/_error()`), then you should always have this content type set.
3	3
4		Logically, yes. However, this was ~~happening to~~ a client when they were trying to add an image to a post, even after I had disabled all plugins. Perhaps there might be a deeper root cause, but I found that the attached fix was sufficient for this scenario.
	4	Logically, yes. However, this was affecting a client when they were trying to add an image to a post, even after I had disabled all plugins. Perhaps there might be a deeper root cause, but I found that the attached fix was sufficient for this scenario.
5	5
6	6	Given that the function in question only deals with JSON responses I figured it would be a good idea to get this in place, that way even if something goes wrong higher up the chain there is still a chance to recover from it. Otherwise I would like to spare a less experienced developer a painful multi-hour bug hunt.