Translucent material render problem

For some reason, I have to use translucent material instead of opaque. And I got the render problem.
If I use translucent material, the render older is weird. There are gif files below can help to understand the problem.

Translucent and Opaque

203683-translucent.gif

203685-opaque.gif

Translucent Base Material

Translucent Material Instance

Opaque Material

Its a limitation of translucency and differed rendering.
Not much you can do about it.

Is that a bug?

no, its a limitation.

Try faking its transparency with just an opaque material and use the bumpoffset node, or subsurface scattering.

Sorry for replying late.

This is a good idea, and I tried it. It works well!