[M.C.]

works on 4.2 BUT when close thread get:

The thread has been successfully {1}. You are now being taken to the thread.

When open back it says Open instead of {1}... where should I look?

UPD: Got it! In plugin Move Thread with close change

eval(print_standard_redirect('redirect_openclose', true, true));

with:

eval(print_standard_redirect(array('redirect_openclose',$action), true, true););