Emulator

What steps will reproduce the problem?
1.When turn on safe texture cache no matter choosing fast, normal or safe.
2.There will be a black square texture block the view and you can't see anything.
3.But if you not using safe texture cache, the color will goes wrong.

What is the expected output? What do you see instead?
Can turn on safe texture cache without any black square texture block the view.
Dolphin version with the problem? Other Dolphin version without the
problem?
tested on r4716 and r6430 both opengl and direct3d9
32-bit or 64-bit and any other build parameters?
64bit
OS version and versions of tools/libraries used?
win 7
Please provide any additional information below.
Here is some screenshot to show the problems:
The first picture show turning on safe texture cache
The second picture show turning off
The last picture is the wireframe when turning on safe texture cache
Also, I find a old issue 1871.
It "may be" similar with this issue and Status: Fixed in r4826 and it occur again?