I'm writing this because I solved it myself. (I've checked it on multiple Quarts, so I've decided it's not a machine problem. The Cue on the fader seems to delay it with MIDI, but if I put it in Playback, the problem doesn't seem to occur. I don't know the cause, but this seems to solve the problem....

Hi.
I'm in the same situation.
I have no choice but to use MIDI notes typed to just the right length.
Or I can set the first keyframe shape to dimmer 0 and it will turn off at the end of the cycle, so that's how I type it.
I think this is a design error.
I hope you can improve it.
(Translation tool)

Nice to meet you. I am a user of Avolites Quartz. My day job is as a musician, so I use MIDI Trigger to call Cue and create light effects. But now I have a problem and I need some advice from an experienced user. Situation: I want to use the MIDI Trigger function to call up the Cue in Avolites Quart...