[wp-trac] [WordPress Trac] #40020: Customizer fails to load in Safari due to X-Origin Header mismatch

[WordPress Trac]

#40020: Customizer fails to load in Safari due to X-Origin Header mismatch
-------------------------------+------------------------------
 Reporter:  nickkeenan         |       Owner:
     Type:  defect (bug)       |      Status:  new
 Priority:  normal             |   Milestone:  Awaiting Review
Component:  Customize          |     Version:  4.7.2
 Severity:  normal             |  Resolution:
 Keywords:  reporter-feedback  |     Focuses:
-------------------------------+------------------------------

Comment (by endortrails):

 I'm receiving the exact same error as @nickkeenan. I'm adding some
 additional details in case it helps others replicate the issue. This only
 seems to happen in Safari. Chrome and FF are fine.

 How to replicate:

 1. Safari version 10.0.1
 2. WordPress network using subdomains
 3. Wildcard SSL cert to secure all subdomains
 4. NGINX with a single add_header X-Frame-Options SAMEORIGIN; set in
 configs.

--
Ticket URL: <https://core.trac.wordpress.org/ticket/40020#comment:4>
WordPress Trac <https://core.trac.wordpress.org/>
WordPress publishing platform