Many thanks for figuring out the trigger on this. It turns out that this is a side effect of one of the crasher fixes in 3.3.4. I had to decouple the size of two components in a page to work around a nasty Apple bug, but that meant that I then had to keep the sizes in sync myself. Unfortunately I forgot to do so in the widows, orphans and footnotes layout code, which meant that the visible area was resizing to make room for these things, but not the real, laid out area, resulting in lines being cut off.
Please try this build, which should fix the issue:
I’ll get 3.3.5 out later today or tomorrow once the fix is confirmed.
Thanks again and all the best,
Keith