When I create example sentences, it forces me to "auto segment" the text. And then it groups the words in a strange way. For example I want:

Ni3 guo4fen4 xiao3xin1 le5.

But I can't save the sentence without clicking "segment" first, and then it ends up as:

Ni3 guo4fen4xiao3xin1 le5.

After saving the sentence, clicking on guo4fen4xiao3xin1 results in an error; presumably because it's not a word.

I found the same problem. Hence why I unfortunately don't use this function, and instead paste my example sentences in the definition section.

You can put a space in between the characters before hitting auto-segment to make it split those words up.