Hi Steve,
Freeway does have problems with long pages. The maximum permitted value is 32767, but problems seem to occur when the height gets to about half this. There used to be a bug logged on this. It seems to be some kind of graphics display problem. The data is there on the page, but it’s not displayed properly.
I don’t know of a good way to avoid these problems, other than by avoiding pages that are taller than around 16000 pixels.
One thing I notice in your screenshots is that there seems to be an overflow symbol at the bottom right of one of the boxes. This indicates that the box is too small (width or height) for its content, so you could try increasing the height of that box, or give it an undefined (flexible) height. You might also see an overflow symbol at the bottom right of the page. If that’s the case, try increasing the height of the page until the symbol disappears.