Administrator can set multilingual logon screen in HelpDesk Administration menu -> User Dashboard:
Checked 'Multilingual at Logon screen' gives Russian and English tabs on logon screen:
The un-checked gives only one language that is set as default in JIRA system administration menu.
Checked 'Multilingual at Logon screen' gives Russian, English, Spanish, German, Polish, Slovak, French tabs on logon screen:
