Thinkfree office editing loop keeps moving up to o

Caught in A loop. Trying to input song lyrics and i’ve Gone out and in over and over again just trying to get one word at the end of a sentence done. As I enter it the word shows up 3 lines above replaces a word that should be there with the word from the lower line. It’s an editing loop that is driving me crazy! I’ve turned the thing off... I’ve even tried typing a second copy. But it keeps returning to this same problem! Help!!!