The steps for defaulting the GPUTextureViewDescriptor for a 2D array texture first default dimension to 2d and then default the arrayLayerCount to 1. This is quite unexpected since .createView() seems like it would create a full view of a texture.

Looking at the history of that spec section, it seems that the change comes from this comment thread, that doesn't call out this change of behavior explicitly. @kainino0x @toji, this seems like a bug, can you confirm?