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#23344 closed defect (bug) (duplicate)

'preview' query var is not removed from post URL if a post has been published

Reported by:	amit	Owned by:
Priority:	normal	Milestone:
Component:	Canonical	Version:	3.5.1
Severity:	normal	Keywords:
Cc:		Focuses:

Description

If a post has been published, it can be loaded via a URL containing 'p' & 'preview' query vars and a canonical redirect is not done to post permalink which results in two URLs with same content and causes a duplicate content issue with search engines like Google.

For example:

http://example.dev/?p=731

would redirect to

http://example.dev/post-slug/

but

http://example.dev/?p=731&preview=true

does not redirect anywhere & remains same. So if this URL is somehow indexed by search engines they would have two URLs with same content:

http://example.dev/post-slug/
http://example.dev/?p=731&preview=true

and thus the duplicate content penalization.