Japanese characters configured in Addresses of "Send Email" step are garbled.

Question / Problem: 

Japanese characters configured in Addresses of "Send Email" step are garbled.

Answer / Solution: 

This is a known issue and planned to be fixed on version 10.7

 Bug: 1266699 – “Garbage Characters Recipient In Email Address”. 
  

Note: There is no workaround for this problem but no impact on sending emails.