This effects all effect with a group delay.
Basically all fidlib based filter suffer this problem. The biquad based EQs are also effected when not at unity.
We may add a group delay reporting facility and compensate the dry pass accordingly but unfortunately the group delay is also frequency depending for all non Bessel EQs
So we need a kind off all pass filter for compensation.
This effects all effect with a group delay.
Basically all fidlib based filter suffer this problem. The biquad based EQs are also effected when not at unity.
We may add a group delay reporting facility and compensate the dry pass accordingly but unfortunately the group delay is also frequency depending for all non Bessel EQs
So we need a kind off all pass filter for compensation.