Update thanks to RayL for finding the issue:
Fixed: Not detecting capitals in chord name CMaj7 > Cmaj7
S1 doesn't recognize uppercase in the chords unlike BB, you may want to suggest that to PreSonus.
Try this and see how it goes.
BiabPluginChords-StudioOne.zip

Here's one for chords to markers, so any midi you export will have the chords in it as makers (something I asked PG to do since 1879 smile )
ChordsToMarkers-StudioOne.zip