Bypass function of the sends slot doesn't work porperly.

I live in South Korea which is not an English speaking country. so please understand my poor English :wink:

As you know, pressing F3, mixer window pops up. and there are sends slots on the audio channel strip.

Imagine that I make a FX Track for reverb and a audio track for guitar. and I make the sends slot of the guitar track go through the FX track.

While the send slot’s power is off, blue lamp turn to grey. and I click the lamp for bypassing then lamp color turns to yellow. it’s normal this far.

But when I turn on the power of the sends slot again. the FX channel’s level meter goes up although the lamp is still yellow color. that means bypass functions is not working properly.