Broken characters in Confluence searchbox with Russian language settings

Environment:

Confluence 6.7.1 (Linux 64bit) PostgreSQL 9.5, Chrome 64

Bug description

Broken characters in Confluence searchbox with Russian language settings

Steps to replicate

• Click on user avatar icon -> go to "profile"
• Go to settings
• Click on edit and change language setting to Russian (ру́сский)
• Move mouse cursor to the searchbox

Expected results

Russian translation plus "(/ or g, g)" is displayed:

Actual results

Following characters are displayed: