Emulator

Game Name?

Mario Kart Wii

Game ID? (right click the game in the game list, properties, info tab)

RMCE01

MD5 Hash? (right click the game in the game list, properties, info tab, MD5 Hash: Compute)

85cec93364c2cc88a1824a8c6f11ac43

What's the problem? Describe what went wrong.

Everything works fine but in time trial mode there is a black layer during the race/replay HUD and drifting sparks are missing.

What steps will reproduce the problem?

Use older dolphin version

Which versions of Dolphin did you test on? Does using an older version of Dolphin solve your issue? If yes, which versions of Dolphin used to work?

4.0-7876
Yes. 4.0-7528 Solved this issue

What are your PC specifications? (CPU, GPU, Operating System, more)

CPU: Intel Celeron B820
GPU: NVIDIA GeForce GT 620M
OS: Windows 8.1 Pro
6GB RAM usable 5.8GB

Is there any other relevant information? (e.g. logs, screenshots,
configuration files)

Yes.
Screenshot with EFB Copies to texture unchecked