Mini oneboxing doesn't preview for encoding slug generation method

[Pad_Pors]

when slug generation method is on encoded, the mini oneboxing preview is not shown correctly:

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This is a topic with encoded slug generation, تربیت گذشته و حال من درباره غذای باقیمونده در سفره - ایستگاه پرسش - پادپُرس

this is the same topic after I changed the slug generation to ascii: https://padpors.com/t/topic/2514

should it be like this? as one may think it is not working.

[youwiki (Alexander)]

It seems that Excon.public_send(@http_verb, ...) return 404.
Oneboxing, for example, this file: https://www.nalog.ru/html/sites/www.new.nalog.ru/docs/instruction_installation.pdf also don’t work.
May be some request headers wrong, or some additional properties need to set for Excon?

[codinghorror (Jeff Atwood)]

What do you think here @sam?

[sam (Sam Saffron)]

I think its a bug, we should fix it.