[bug] image disappears when gravity is applied

[MartenPostma]

What happened?

A bug happened!

`
import play
image = "door.png"
box = play.new_box(
width=1000,
height=30,
x= 0,
y= -300
)
box.start_physics(can_move=False,
bounciness=1,
)

person = play.new_image(image=image,
x=0,
y=6,
size=20)
person.start_physics(obeys_gravity=True)

@play.repeat_forever
def check():
print(person.x)
print(person.y)
input('continue?')
play.start_program()
`

Version

latest

Relevant log output

Hello from the pygame community. https://www.pygame.org/contribute.html
0.0
6.0
continue?
0.0
5.874999999999998
continue?
0.0
5.47222222222222
continue?