Bugged images after binding a Sprite in Image Component using OneWayPropertyBinding

[Gradir]

When using One Way Property Binding to bind a public bindable Sprite property from my ViewModel it seems Weld is overriding something more than just the sprite itself, as I it stops resizing to RectTransform properly as it should be and also the image is stretched despite being set to constrain original proportions.
I'm using Unity Beta 2019.1.0b4, which also can generate problems, but all the images without binding act properly.

[Gradir]

The funny thing is that binding an overrideSprite property works well. It's probably the best way to bypass the problem for now

[Gradir]

The problem probably derives from a Collection Binding to a template using a child View-Model, as it works well with the original sprite in the gameobject. As soon as we do a one-way property binding of the sprite in the Image component and change it to other sprite that way, the things get buggy. You cannot event set the color of the sprite anymore