IE 8 and SSRS WindowSelectControl

I know that when we started using SSRS reports that the end user was not able to select anything in a dropdown window until I added a new DWORD in Regedit/FEATURE_USE_WINDOWEDSELECTCONTROL for tessitura.exe.

I am going to be upgrading my IE 7 to IE 8 for testing. But I wanted to know if anyone has upgraded their IE 7 to IE 8 and if so did that effect the way the WindowSelectControl worked with the SSRS Reports?