Objects of negative coordinates can be made in the lazer editor and they behave differently between stable and lazer

[cihe13375]

Objects of negative coordinates can be made in the lazer editor by distance snap:


these notes survives saving and actually works in lazer gameplay (the note 1 is at y=0, while note 4 is at y<0):

they also survives a .osz export and can be imported to stable.
unknown artist - unknown title (Guest).osz.zip
however, stable gameplay displays the object at y=0:

This discrepancy implies two issues:

1. we probably want to disallow negative coordinates in the editor (cannot be created and are automatically moved to x=0/y=0 at save), because they will behave differently when played in stable which is likely not desired
2. I don't know if any ranked map has such objects, if they have then the scores set on lazer and stable would be incomparable because the maps are essentially different (though they are already incomparable anyway due to sliderhead accuracy).

Edit:
x>512 has the same issue.
y>384, however, somehow works in stable (stable editor does not forcefully move them back and they are displayed "correctly" in stable gameplay), so maybe it does not need to be fixed.