Flipbook node is ignored in SlateBrush material ?


I’m trying to use a Flipbook node inside a material which will be used as base for a SlateBrush. When I see the preview of SlateBrush it’s like the flipbook node is completely ignored :confused: (It’s using the whole texture)

The usage of Flipbook node is basically to crop an image from a texture atlas. It works applied to meshes and in material preview, but when applied to UMG widgets it takes the whole texture instead

see this question to get some screenshots about what I’m trying to do: