Cannot Bypass GAIN in PRE rack

Cubase 8.0.5 64bit on Win 7 Ult. 64bit

Cannot bypass GAIN setting in the PRE mixer rack.
Bypassing the mixer PRE rack (blue to yellow dot) affects only the filters.and does not affect the GAIN parameter.


Same goes for the Phase
Was the same in Cubase 7.
But it seems logic to me that it doesn’t bypass Gain and Phase and only the filters.