Tiling Sprite in UMG uses whole image

When a Sprite that has been created from a Texture Atlas is used in a Widget, it can not be tiled. Instead the whole Texture Atlas is tiled. 

Reported in version 4.25.3(CL 13942748). Tested and found in versions 4.25.3, 4.24.3(CL 11590370), and 4.23.1(CL 9631420).

1. Create a Texture with multiple images ( Atlasing )
2. Create Sprites from that Texture.
3. Use one Sprite as Image in UMG and set Tiling to Both.

Result: The whole Texture will be used, not only the Sprite image.

Expected: To only tile the Sprite image.

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