Preview of drafted posts not possible when front page is set to a static page

[jnthnlstr]

Problem: It is not possible to preview posts when you have set your front page to be a static page

Steps to reproduce:

• create a new blog
• create a page
• go to Settings->Reading
• select your page in the 'static page' for the front page

Then, there are some variants...

1st variant:

• create a new post, do not publish
• do not click 'save draft'
• click 'preview'
• observe: visible front page, URL is like /?p=78&preview=true

2nd variant:

• create a new post, do not publish
• click 'save draft'
• click 'preview'
• observe: visible front page, URL is like /?p=80&preview=true

3rd variant:

• create a new post
• publish
• make a change
• hit 'preview changes'
• observe: correct page preview, URL is like /new-post-three?preview=true&preview_id=83&preview_nonce=084e8f6b22

4th variant:

• create a new post
• publish
• change status to 'draft', click 'update'
• hit 'preview'
• observe: visible front page, URL is like /?p=86&preview=true

Conclusion: draft pages not previewable when front page set to static page.

[dd32]

Are you running any form of caching? I can't duplicate this.

What Permalink settings are you using? Do you see the same with the Default (ugly - ?p=123) as you do with /%postname%/ (Which is what I assume you're using?)

[SergeyBiryukov]

I imagine this could happen if this block in query.php runs when it shouldn't:
​http://core.trac.wordpress.org/browser/tags/3.2.1/wp-includes/query.php#L2004

Normally, when doing a preview, the first two conditions aren't satisfied at the same time.
But when I tried to hook into pre_get_posts and set $query->is_home = 1, the results I got were similar to the ticket description.

This also reminded me of #13779 (having cookie issues due to different URLs for "WordPress Address" and "Site Address"), but in that case, 404 template would be displayed, not the front page.

[dd32]

Hm, Definately, if something is hooking into the Query parsing, and modifying the query when it shouldn't be, it'll definitely cause that. Might need to do some investigating, but is_home shouldn't be true for the preview URL's, nor should it be parsing it as the front page.

[SergeyBiryukov]

Feel free to reopen with more information if there's still a problem.