A page that has been recently updated and shown in the All Updates tab will disappear if it has a parent page and it's parent gets a comment.

Steps to Reproduce

1. User A creates and publishes a page
2. User A creates a child page
3. User A edits the child page after a minute or two of it's creation (at this point both pages will be displayed under User's A avatar in the All Updates tab)
4. User B adds a comment on the parent page

Expected Results

Both edits from User A (the parent and the child page) will continue to be displayed in the All Updates tab, alongside User's B comment.

Actual Results

The child page is no longer displayed under User's A avatar, only the parent alongside User's B comment.