[TYPO3-ttnews] Single view + multilanguage problem

[Olga Zhuravleva]

I have 2 languages - russian and english.
Page with list news and page with single news.
In plugin settings of list news page I set "PageId for single news display:"
single news page.
In plugin settings of single news page I set "PageId to return to:" list
news page.
Problem: when I view single new on site and then switch language - no
news_id given - my single new is disappear.