Share same point for all spites of this animation not working for the first animation

Hello guys,

I noticed that if you try to change the points of your first animation, (Number #0) Sometimes Gdevelop won’t let you deselect the Share same point for all spites of this animation Well it does, but then it turns back to default again.

Meanwhile if you try to change it on your second, or third etc animation it works fine.

Anyone knows why?