In UE4.11 if I import a map with a packed texture there is an issue. It doesn’t read the channels correctly.
For instance if I pack a texture map and combine the Metallic, Roughness and Ambient Occlusion into each channel:
Metallic = Red Channel
Roughness = Green Channel
Ambient Occlusion = Blue Channel
Then I import that texture as a png or even a targa, it won’t read those channels properly when I plug them into the material. They don’t render correctly nor look correctly. This issue is unique to UE4.11 and did not occur in previous engine versions. Hopefully it’s not some setting in my Photoshop. If someone could please confirm this bug that’d be great.