Russian translated text is corrupted in UI

When we are using Russian language and saving a workflow after editing, it shows ???? ????? ??????.
Affected JIRA 7.2.2, 7.7, 7.8, 7.9
Steps to Reproduce:
Install a fresh JIRA instance using version 7.7
Change the default or profile language to Russian
G + G > Workflow > Select an active workflow and click Edit
Publish the workflow and a notification will be shown as below