Wordpress custom URLs return the index page on upgrading from v4.5.3 to v4.6

[xckd]

Upgraded to v4.6 from v4.5.3 and my site started showing the home page's content instead of the requested post or category page. The admin dashboard remained functional.

Also the View draft page was also functional.

Also interesting was to see that while the url changed to the correct address/value(site.tld/requested-url), the content itself was that of the home page.

Nginx server log showed no redirects taking place, so it's somewhere in wordpress that broke or my theme that got broken by Wordpress.

Web server: nginx/1.11.3

php: PHP 5.6.25

debian 7 openvz host

Theme:

Buso lighting v1

Plugins:

Google XML sitemaps

Disable google fonts

W3 Total cache

Perm URLs:

site.tld/%postname%

Site is on https, with LE as CA.

WP-config has these lines for forced ssl:

define('WP_HOME','​https://site.com');
define('WP_SITEURL','​https://site.com');

Commenting these out on v4.6 changed nothing.

The problem persisted with plugins disabled and plugins disabled and the cache emptied.

Downgrading to v4.5.3 from backups seems to be the only resolution.

[xckd]

Replying to xckd:

Upgraded to v4.6 from v4.5.3 and my site started showing the home page's content instead of the requested post or category page. The admin dashboard remained functional.

Home page is set to the rolling blog page with latest posts instead of a static page.

[Ipstenu]

Hi, it looks like you're actually having an issue with your specific install vs this being a core WordPress issue. We'd expect to see a lot more error reports if it was a universal bug. And from the sound of it, I'd think it's to do with your theme.

Try changing to a default theme and upgrading again. If that doesn't work, work your way through the Master Trouble Shooting List - ​https://wordpress.org/support/topic/read-this-first-wordpress-46-master-list - and please post in the forums if you need more help :)

[xckd]

The theme got broken so switched to 2016 for the time being