Not a bug Internet Explorer shows avatar with transparent background as broken image

[derEdgar]

XenForo 1.5.12
Default or custom theme

Avatars with transparent background show as "broken image" in Internet Explorer (IE 11).
No Problems with Firefox or Chrome.

 

[Mike]

Can you provide a link to this image?

 

[cbpayne]

I getting the same problem in IE
Here is one:
https://podiatryarena.com/index.php?members/craig-payne.3/

 

[Paul B]

Huh, interesting.

IE won't even load that directly: https://podiatryarena.com/data/avatars/l/0/3.jpg?1473857632

 

[cbpayne]

I get the same; other avatars do load.
This one doesn't open in IE: https://podiatryarena.com/data/avatars/l/0/698.jpg?1473857635
This one does open in IE :https://podiatryarena.com/data/avatars/l/2/2114.jpg?1473857638

Both open fine in Chrme and Firefox.
It has been like this for a while on my forum in IE ... never really worried about it as so few use IE!!

I assume this is same problem as the OP is having... (sorry to hijack)

 

[Paul B]

Looks like it's due to the transparency.

 

[derEdgar]

https://forum.thecorporateer.com/data/avatars/s/0/8.jpg?1487056209

added example picture as attachment

 

[Mike]

I can only look at https://podiatryarena.com/data/avatars/l/0/698.jpg?1473857635 as the other URL is returning a password prompt.

However, this is caused by a non-standard header being added (by your web server/reverse proxy) along with a limitation of XF. XF writes all avatars out with a ".jpg" extension regardless of actual type. (From a time when we forced all avatars to JPG.) This server is adding a X-Content-Type-Options: nosniff header. The image in question is a PNG, which causes IE to not display it. IE implements this header more strictly than other browsers (https://github.com/whatwg/fetch/issues/395).

To resolve this, you'd need to prevent that header from being added to at least the image requests.