Subscribe to Facebook Page photos using Pages API webhook

问题

TL/DR;

With page webhook in place, if I upload new photo to the Page via Photos Facebook notifies my webhook. If I do the same on page timeline — it doesn't.

Details:

I want my application to receive new posts from some public Facebook page. Posts may have a photo attached or may not.

What have I done:

In my Facebook app settings I've created a Page Subscription in Webhooks section. I've chosen 'feed' field. I've subscribed my app to the target page using "/subscribed_apps" endpoint. Page access token with "manage_pages" permission was used for that.

Problem:

Facebook is calling my webhook and my app receives text posts from the page, so basically subscription works. But if I attach an image to the post, Facebook doesn't trigger the webhook. I don't see any other sensible field to choose for Page Subscription and I've tried almost all of the other fields as well with no luck.

I'm stuck. It looks like I need to fine-tune some permission somewhere, but just don't see which else to try. Is it ever possible to subscribe for new page photos?

UPD:

If I upoad new photo via Photos Facebook notifies my webhook. If I do the same via page timeline — it doesn't. Looks like a bug

UPD2:

Fixed by Facebook team. Now works as expected