- snap to beat/4 or more coarse
- create a clip on a track with fluidsynth (probably every synth plugin is ok), say on bar 2
- draw a note at the beginning of the clip
- place the playhead exactly at the beginning of the clip
- press space
- the note isn't played immediately but some beats later
If you place the playhead a bit earlier then everything is ok.
In my example the note that should be played immediately at bar 2 is played exactly at bar 3.