If you bonemeal a flower (except ploppy and dandelion) it will only spawn ploppies, maybe because other flowers are the ploppy but with different damage values, I think is better to set the same duplication method like the tall flowers for all flowers. I know there is a similar report, but actually the bug was not fixed, screenshot is from build 1, but it still happening in Official 0.15.1. My device is an M4-SS4020.