I cannot unsee Takaya's height difference with Usagihara's constantly changing. In one panel, he's a head taller. In others, he's maybe 10 cm taller, and in one panel they're almost similar due to her leaning forward but maintaining the same gap. Even if you account for him slouching, it's changing way too much. Maybe it's the terrain of the street?
She also held her hair that same way at the end of chapter 17.5