MyBB Community Forums

This has been fixed for 1.8.16 already.
https://github.com/mybb/mybb/pull/3141

If you need to fix it immediately then open:
admin/modules/config/settings.php

Go to line no. 1520 and change

htmlspecialchars_uni($setting['description']),

to

$setting['description'],

Thanks effone..

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Dont work live but only in admin.

https://i.imgur.com/iorTLGB.png

https://i.imgur.com/zjKYPU8.png

http://bildforumet.se/index.php

It is to be that way. The issue was with descriptions of ACP only.
It is not allowed for live for good security reasons ...