Best romance movie plot holes of 2019

Plot hole: Grewishka sneak-attacks Alita using his weapon from outside the window. How in the world was the hulking behemoth just standing outside the window without Alita noticing? He surely couldn't have tiptoed into that spot after she arrived, he makes a ruckus for every step he takes. (01:47:10)

Sammo ★

Plot hole: Kate goes to Tom's flat (the scene where they sit on the floor, she shows him her scar, and then he puts her on the bed). But as she obviously doesn't have a key to his flat and he (spoiler alert) isn't really there, she would not have been able to get into the flat.