Missing snapshot functionality in 2.0b3

In version 3.0b3 items id="zotero-tb-link-page", id="zotero-tb-snapshot-page" is commented in overlay.xul.
Also, automatic snapshot generation is missed in id="zotero-tb-item-from-page".
Why this important functionality is excluded from the beta version, that is the working version without declaration of war?

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