Missing "statistics" from video list response - youtube-api

Question

I am calling youtube api for videos.list(https://developers.google.com/youtube/v3/docs/videos/list) with part="snippet,contentDetails,status,statistics,topicDetails". On Apr 6 or 7 2017 something changed and for many videos I don't get field "statistics". I'm wondering, why this happens and how I can get publicly available counts, like viewCount, for them?
Here are a couple of example videos: PiZEMoZ535I,vHw_drm5cRk

Answer 1

This is likely a bug, it was working fine until April 7th. There's an Issue Tracker created for that, however Google still didn't say anything about this.
EDIT:
This seems to finally be fixed

Answer 2

You need to make a call to the API with the resource video.list with parameters :
part: statistics
id: "id of the video found in previous request"
If you have more than one video id you can specify the id of videos with a comma-separated list like :
id: "Xxsdw6zG1bg, Xxsdw6zG1bg,...." )
The request: https://www.googleapis.com/youtube/v3/videospart=statistics&id=UHdgXkkVyl0%2C+Xxsdw6zG1bg&key={YOUR_API_KEY}
The response will be like this :
{
"kind": "youtube#videoListResponse",
"etag": "\"MmqJLb8ZBOWRQIsg7xej7lrKLMI/rxvjZzq2nNqBg7Me5VQv1ToZm64\"",
"pageInfo": {
"totalResults": 2,
"resultsPerPage": 2
},
"items": [
{
"kind": "youtube#video",
"etag": "\"MmqJLb8ZBOWRQIsg7xej7lrKLMI/3fah-cngFxFOnytseMYZU1TK_-8\"",
"id": "UHdgXkkVyl0",
"statistics": {
"viewCount": "3070836",
"likeCount": "72140",
"dislikeCount": "1132",
"favoriteCount": "0",
"commentCount": "7798"
}
},
{
"kind": "youtube#video",
"etag": "\"MmqJLb8ZBOWRQIsg7xej7lrKLMI/J4xM7Dd23TGYU6on-PESyEIAE9A\"",
"id": "Xxsdw6zG1bg",
"statistics": {
"viewCount": "131487",
"likeCount": "1459",
"dislikeCount": "25",
"favoriteCount": "0",
"commentCount": "39"
}
}
]
}
And you have the statistics !