Somewhat related, but not the same thing; I'm curious when Firefox will finally get proper line breaking support for Burmese and related languages?

Burmese doesn't have spaces between words, just between phrases and sentences. Breaking lines between sentences results in really ugly jagged paragraphs. (I've ended up inserting Unicode zero width spaces between each syllable to get line breaking to work consistently in projects I've worked on.)

Checking just now on Windows 10, Firefox and Edge aren't doing it correctly but Chrome and IE are. Even Windows Notepad is getting it right.