Schedule report with thai characters report name results in email with bad filename attachment

Scheduling a report with filename containing "thai" characters produces an email attachment with corrupt filename (=UTF-8B4LmB4Lia4Lia4Lij4Liy4Lii4LiH4Liy= =UTF-8B4LiZ4Liq4LijX+C4m+C4geC4suC4o+C5gA=== =UTF-8B4LiVX+C4oeC4mVguLPguKFf4LiZ4Lit4Liy4LiB4LiyLnBkZg===).

For the same scheduled report, the output file generated correctly in the specified repository output location.

Issue can be reproduced after logging into TIBCO JasperReports® Server as either US english locale or french locale.

Screenshot of email attachment showing corrupt file name:

System information:

Using Jasper server version : 7.8.0

I have deployed the different instance of Jasper reporting server v7.5.0 and it is working fine for report scheduling for "thai" character filenames.

Reference bug: https://community.jaspersoft.com/wiki/schedule-report-long-report-name-containing-accented-characters-results-email-bad-filename