First, show non-printing characters so you can look for non-breaking spaces. Next check for a long string of text to which No Break has been applied (if you make the frame narrow and the text goes into overset, it's easiest to find these problems by looking at the first bit of text past the overset indicator in the Story Editor). The next possibility, which would be reinforced by large changes in where the text goes into overset whenyou adjust the frame heith only slightly, is that there are keep options applied that prevent ID from fitting all of the required text into the remaining space in the frame.
Thanks for responding. Some of your advice worked. I checked all the keep options and the non-breaking spaces. But I am still having a situation where some paragraphs will act properly when I change the height of the frame but if I try to adjust the frame between paragraphs, so that one should start in the next frame, it grabs the last line of the preceding paragraph. There is a hard return between graphs. Any ideas? Is this a font issue?
That's a Keep Option. You need to check both paragraphs as it could ne a Keep with Next onthe first one, or a keep with Previous on the second. Ic ould be part of the style or applied as a local override.
Thanks! I kept looking at the Keep Options and neither box for Keep with Previous or Keep Lines Together was checked. I thought the Keep with Next was a sub set of Keep with Previous. Took me a while to realize that Keep with Next note 1 lines. But got it and that was the trouble. Don't know why I couldn't see it, it's plain as day.