A PlainText preview is garbled when it includes non-ASCII characters encoded with not UTF-8(e.g. Shift_JIS)

[atsurinange]

Hi experts,
We have a problem that ACS preview functionality provides garbled results when a plain text document has non-ASCII characters encoded with not UTF-8. We have ACS community edition 7.3.1, 7.4 and 23.1 and this happens in all versions.
Even if the same characters are included in a plain text encoded with UTF-8, transformed result in preview window is correct (not garbled)

Of coursse, if this document is not a plain text but a MS-Word or so, such garbled result will not be provided.
In my understanding, the transformer is libreoffice in case of transforming from plain text to pdf for preview window. But I confirmed libreoffice on server could open this plain text file with non-ASCII characters(Japanese) encoded with Shift_JIS properly...

Much appreciated if you give us supportive information to resolve this... Or clarify whether this is a bug or not.

#Garbled preview result in case of Shift_JIS encoding plain text

#Correct preview result in case of UTF-8 encoding plain text

[atsurinange]

Can anyone provide any information about this? As of now, there is no way to view this kind of contents without downloading for consumer users. This is so hard to use alfresco as you can imagine easily...