IE 11: Icons not displayed properly

[d-trattner]

I'm submitting a ...

- [x] bug report => search github for a similar issue before submitting 

...about

- [x] edit experience / UI
- [x] admin experience UI

Current behavior
Icons not displayed properly:

Expected behavior
Icon displayed correctly

Minimal reproduction of the problem with instructions
Install 2sxc v09.03.00-pre3 on DNN 9.1.1
Add array find polyfill to the skin: https://developer.mozilla.org/de/docs/Web/JavaScript/Reference/Global_Objects/Array/find
This is to prevent modules.find error.
Installation has to be completed when adding the first app.
After that, you can see the first icon as chinese symbol.

What is the motivation / use case for changing the behavior?
Having icons

Please tell us about your environment:
DNN 8.x / 9.1.1
2sxc v09.03.00-pre2
IIS 8.5
.NET 4.5.2
SQL Server 2014

• 2sxc version(s): 9.1.1
• Browser: [IE 11]
• DNN: [8.0.3 | 9.1.1 ]
• Language: [any/all | English | German | other ]

Anything you would like to add
Has to do with IE, works in chrome

[d-trattner]

Update:

Its working local in IE11, could really be mime-types issues

[iJungleboy]

In this case it's a server-setting - your server is sending the wrong mime-type for certain font files. I'll close this issue in this case. thx!

[d-trattner]

I tried these mime-types:
https://github.com/EnlightenAgency/Server-Setup-MIME-Types-Headers/blob/master/font-mimetypes.txt
Still no success.

I'm trying the following recommendations now to find a solution:

https://github.com/FortAwesome/Font-Awesome/wiki/Troubleshooting#im-hosting-fonts-on-my-server-and-icons-dont-show-up

FortAwesome/Font-Awesome#3286

[iJungleboy]

to be on the safe side, I would watch your traffic using fiddler - check the one that works, and compare it to the one that doesn't work - then adjust the headers. my guess is that your woff or woff2 is missing a setting.

[d-trattner]

Just for documentation, IE does not request any font.
fiddler_chrome.txt
fiddler_ie11.txt

I made a test folder in my dnn installation and tried different things...

• removed pragma, cache-control and expires headers in web.config
• removed version control in url(font.woff?...)
  test.zip

IE - the busykeeper :)

[d-trattner]

Finally.. you never believe me, it had nothing to do with any incompatibility or IIS.
Issue was caused here:

[iJungleboy]

this is pretty crazy - and thanks for the info :)