Running the RenderTexture FadeOut Transparency scene as example on URP with a forward renderer in Unity 2022 and Spine 4.2.28 Runtime Examples.

The SkeletonGraphicRenderTexture appears to get deformed as soon as play mode starts, and the deformity changes as the game window is resized.
It also gets multiple errors related to setting the texture on the raw image when the window is resized while the scene is running.

Error below:

Trying to add SkeletonGraphic (spineboy-pro) RenderTexture (UnityEngine.UI.RawImage) for graphic rebuild while we are already inside a graphic rebuild loop. This is not supported.
UnityEngine.UI.RawImage:set_texture (UnityEngine.Texture)
Spine.Unity.Examples.SkeletonGraphicRenderTexture:SetupQuad () (at ./Library/PackageCache/com.esotericsoftware.spine.spine-unity-examples@6118a5f704/Scripts/Sample Components/SkeletonRenderTexture/SkeletonGraphicRenderTexture.cs:215)
Spine.Unity.Examples.SkeletonGraphicRenderTexture:PrepareQuad (Spine.Unity.SkeletonRendererInstruction) (at ./Library/PackageCache/com.esotericsoftware.spine.spine-unity-examples@6118a5f704/Scripts/Sample Components/SkeletonRenderTexture/SkeletonGraphicRenderTexture.cs:139)
Spine.Unity.SkeletonGraphic:PrepareInstructionsAndRenderers (bool) (at ./Library/PackageCache/com.esotericsoftware.spine.spine-unity@a8a7ba878a/Runtime/spine-unity/Components/SkeletonGraphic.cs:874)
Spine.Unity.SkeletonGraphic:Rebuild (UnityEngine.UI.CanvasUpdate) (at ./Library/PackageCache/com.esotericsoftware.spine.spine-unity@a8a7ba878a/Runtime/spine-unity/Components/SkeletonGraphic.cs:324)
UnityEngine.Canvas:SendWillRenderCanvases ()