At the Saharan hotel, when Lucy adjusts Maurice's back her round
suitcase displays a 'love yourself' label reading right-side-up. In the
next shot the label is missing. And then, when Lucy goes to pour another
drink, the label is shown again reading upside-down.
At about 25:50 when Gary Oldman is walking into the living room, it is visible under the coffee table that he's crawling on his knees.
Steve is worried that his son might inherit the gene for dwarfism and become a dwarf himself. For the overwhelmingly most common form of dwarfism (known as "achondroplasia"), it is only possible to inherit the gene if either parent is a dwarf, which is obviously not the case. For the less common forms of heritable dwarfism, it is only possible to have a dwarf child if BOTH parents' families have a history of dwarfism, and the film does not show Carol's family to have such a history. In fact, Steve being the only average-sized individual from a family of dwarfs makes it overwhelmingly likely that he did NOT inherit any genes for dwarfism and therefore has a next-to-nothing chance of having a dwarf child.