Sometimes InDesign will break lines at non-space characters immediately. I would start typing abcde..., and as soon as the string reaches the border, InDesign would break the line. Cool.
Other times it won't break the line at first. I would start typing abcde..., and once the string reaches the border it would first disappear and only after I have typed several more characters it would show up again, spreading across two lines. Not so cool.
How do I control this behavior?
(I hope it's okay I'm asking this here; my motivation is type-design related and I'm guessing type designers are more likely to know the answer.)