Why does the "+" not work for me?

As you can see here back is not splitting up between the two using the “+”. Also, as you can see no phenome appears as well. This
is happening in any new project I make. Is this a bug or am I missing something? TIA
Screen Shot 2023-03-24 at 2.15.34 PM

The word “back” only has one syllable, so there’s nothing to put in the second note.

If you want to extend the syllable across multiple notes, use - instead, or enter the phonemes manually.

「いいね!」 5

Fantastic! As easy as that. Thank you Claire!

「いいね!」 1