Because my site is in an early beta-stage, I have added a htaccess-protection to it to prevent random users, searchbots etc. to see the (unfinished) page.
I did it like this:
AuthName "Restricted Area"
AuthType Basic
AuthUserFile /path/to/my/.htpasswd
AuthGroupFile /dev/null
require valid-user
Everything worked fine now for months, until today I added 2 subdomains like
img.domain.com
and
static.domain.com
as a workaround for the get-request limit of browsers which applies per domain/subdomain.
Now everything works as expected except on my iOS 6 iPhone 5, which only asks for the password for www.domain.com and img.domain.com, but not for static.domain.com and therefor won't ever load those resources.
Can anyone confirm this behavior? Thanks.
More info
I can see in the safari debuger that those resources from one of the subdomain (seems to be random which one) are not downloaded. They go red when I stop the pageload.
Even more info
I just confirmed that removing the above Auth-Block from htaccess makes everything work, so in my opinion, this is simply a bug of iOS(6). I'd be glad if anyone can confirm this, although I won't have the problem once the site is live anyway.