IE11: Icon Font not be shown. (Seafile-font2)

Seafile Server
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1

Hello Seafile Community,

Unfortunately, IE11 does not load the icon fonts. (“Seafile-font2”)

Screenshot_12

Can you help here?

Server Version: 6.3.3
IE: 11.345

2

The first page call is, then no longer. The icons are not displayed. What could be the problem?

3

I saw something similar to this, too.
I think there are some posts out there regarding FontAwesome on IE11/Windows 10.

4

Unfortunately, the problem is not resolved. I also find no solution.