Issue
Instance is displaying suffix when instance is set to a Non-English language.
Cause
This is expected behavior due to the glide.translate.learn system property being set to true.
Please find documentation on this can be found here:
https://docs.servicenow.com/csh?topicname=r_UseTheTranslateAndLearnProperty.html&version=latest
Resolution
Set the system property glide.translate.learn to false.