Rose Bush with Sunflower head at top?

I'm not sure what just happened but when I placed rose bush in closed area, a random sunflower head appeared from nowhere, then I take picture of it and replaced rose bush, glitch disappeared.

Then it appeared about 10 minutes later again.

Do you guys have cure to this disease what is happening with my flowers?

EDIT: It happened again, I relogged and it disappeared, seems to be some kind of rendering error?
EDIT: I removed the bush and there's pretty random hitbox in air, uploaded a picture!