Issue related with the latest translation. For some reason some bracket templates (like {0}) are not parsed at all. I'm testing it on fresh upgraded v1.7.5 to v2.2.2 installation.
Example. On Workspace overview page, if there is a workspace description in English I see (caption of the top box):
Workspace Description
In Bulgarian I see:
Описание за '{0}'
(translation - "Workspace description for ...")
The corresponding translation array pair is:
'workspace description' => 'Workspace description for \'{0}\'',
There is no reference to "Workspace Description" only in the English language folder, so I'm a bit lost
IMO software failure, but still no explanation about the missing {0} part in the English version of the site.