Precondition:
At least one additional language is added (e.g. Polski).

Steps:
1. Create two Folders: one in English, one in Polski.
2. Schedule Folders for future publication.
3. Go to Content/Calendar.
4. Open Filers.
5. In Modified language filter select Polski.

Actual result:
All scheduled content items are visible.

Expected result:
Content items in selected language are visible.