Expect zero value for opacity and index in OpenSeadragonTileSource #4037
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opacity
andindex
might be0
, so!opacity
and!index
might skip necessary changes. You can see the effect if you try hiding a layer from the Layers demo:https://deploy-preview-3991--mirador-dev.netlify.app/__tests__/integration/mirador/layers.html
(Or maybe try a more simple manifest like https://iiif.io/api/cookbook/recipe/0036-composition-from-multiple-images/manifest.json .)