The information i have come by so far indicates that Balinese, Javanese, and Batak have break opportunities between each syllable, rather than strongly preferring breaks between words like Thai and Khmer do.

Which of these is true?

1. You can break text at line end for Balinese, Javanese, and Batak between syllables without being concerned about word boundaries.
2. There is a preference for breaking at word boundaries, but breaking at syllable boundaries is also common.
3. Text in those scripts should always break recognisable words at word boundaries.

Since a language like Javanese typically uses disyllabic word roots, are there differences between the expected behaviour of word roots and other parts of the text?

Where syllable-final consonants and syllable-initial consonants can stack, or take on special conjoined forms, do those ever get split? ie. are we talking about orthographic syllables here, rather than phonetic ones?

What happens if you have a longish string of text where all syllables are connected by stacking or special conjoined forms?

Advice (especially with examples) would be very much appreciated.