Raw image dependency calculations missed

[alffanclub]

bug from the forum... the test was:

Bundle A contains: PNG set as Sprite. Bundle B contains: A prefab with a RawImage, using the image in Bundle A.

The image in Bundle A gets duplicated also in Bundle B. The Asset Bundle Explorer doesn't say it, although if you look at the size of the AssetBundle you can notice that the image has been duplicate din both Bundles.