Lethoce

I'm attempting to use Alchemy's built in arpeggiator using the chord mode with the key trigger set to "on". However when ever I play a chord, the very first beat/pulse is just a single note and then the following beats/pulses repeat the entire chord. Is this performing as intended or is it a bug? I would like to press my entire chord and have the arpeggiator immediately start repeating that chord. Any help is appreciated. Thanks!