I have a node with stencil clipping mode, In editor shows correctly, but in runtime only shows a white texture. whats wrong? thanks
Hard to say really. Can you share a minimal project?
I definitely think something is up with how we use the alpha channel in GUI’s, since I can use the same atlas on a sprite. We’ll look into this.
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and why I have this problem?? I think you test all your features of your engine, and no one had reported this bug…
Is there any workaround? thanks
We’re still not entirely sure why there’s a difference between using the large 4k atlas on sprites as opposed to using it on a gui node. We noticed that making the atlas smaller, then the gui showed properly again. We’ve added ticket DEF-3846 for this.
ok thanks
In the meantime, as a workaround;
I’m not sure if there is a reason that all the backgrounds/images are much larger than they “need” to be? When I took a quick look at them in Photoshop it looks like they are upscaled 4 times their original size.
Try resizing them all to 25% of their current size and instead scaling up the gameobjects in Defold if needed. This will avoid the bug but also save you a lot of space and memory usage! 
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Ok Ill try 
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