After update from 1.3.9 to 1.6.7 posts are not returned

[simplenotezy]

After updating from 1.3.9 to 1.6.7 posts are not returned. I am not sure why. The following query would work in 1.3.9:

query Posts {
	post(id: "/some-slug", idType: URI) {
		title
		postType
	}
}

But, in 1.6.7 when I run it, it simply returns:

{
	"data": {
		"post": null
	},
	"extensions": {
		"debug": []
	}
}

Even if I try to query by DATABASE_ID or ID it still returns null

Any ideas what this could be? Or should I traverse through the changelog one by one?

Update

I have went through each version, and I can see that the post is null from version 1.5.2 - it works fine in version 1.5.1, but after that, it starts to break.

Update 2

OK; I think I found the issue. This PR: #1994 made it more strict. And I notice that I for some reason query "post", but I am actually looking for "page". That's the issue.