Currently in studio one a midi note only triggers when the player marker crosses the beginning of the note. However, if the player marker is placed in the middle of the midi note, it will not play any sound when you begin playback.
This is particularly annoying when working with long pads and bass notes. Sometimes you just want to check the transition near the end of a long part, but you don't get the full sound since that long pad or bass note is not playing. Thus you have to move the play marker to the beginning and listen to the whole section just to listen to a small part.
I propose that when the play marker is placed in the middle of a note, the note is played on playback. Many DAWs already have this behavior, I can verify that FL Studio, Ableton, and Reaper all have this feature.
EDIT: Despite my googling I never found a solution to this, hence why I made the feature request. Big thanks to wesleypeterson for informing me that this feature already exists! Check below for the solution if you've come here looking for the solution too.