Daily digest is garbled in Japanese

Issue Summary

Probably starting today, the daily digest is broken for users selecting Japanese on https://id.atlassian.com/manage-profile/account-preferences

Steps to Reproduce

1. Selecting Japanese on https://id.atlassian.com/manage-profile/account-preferences
2. Receiving daily digest by email

Expected Results

Text is displayed correctly

Actual Results

Daily digest is garbled

Workaround

Currently there is no known workaround for this behavior. A workaround will be added here when available