Emails Received from Thunderbird on Exchange 2013 CU23 get their attachments corrupted

We are facing an issue with emails received from specific people using Thunderbird mail client and sending attachments in languages other than English.

The email is received ok . Content is fine and readable but the attachments are received corrupted with the following type :

"part_of_original_filename Filename2= Filename3=' and the size is a lot smaller for example original doc file 58kb attachment received 200bytes

Any seen this issue before and has any idea on how to resolve it ?