Logic's Chord Track. Many issues.

Logic Pro 11.1.2

1. There is NO way to enter chords that isn't slow and clumsy. The keyboard shortcut for entering a chord is not equivalent to using the mouse, and using the mouse with a contextual menu near the playhead is not equivalent to clicking on the plus sign by the Chord track header.
2. Entering chords. Sometimes they're grouped. Sometimes not. Still haven't figured out why.
3. The key combination to raise and lower chords by semitone works intermittently.
4. When entering chords, the entire Arrangement window will sometimes jump-scroll the chord entry spot to the leftmost side of the window, visually confusing you and jarringly re-orienting the timeline. That one is SUPER annoying.
5. After prolonged use, the entire Chord entry process seems to become corrupt. When I double-click on a chord to edit, it won't edit, but the timeline will jump to some arbitrary spot. At least it seems arbitrary. And I simply can't get into certain groups of chords at all to edit them, or add new chords to the Chord track.
6. If I have entered chords in the song and decide to try a modulation a a mid-point, I enter a key-change, get a dialog asking whether I want to transpose the chords, but then it transposes ALL the chords, including those that precede the key change! However, if I don't transpose them, then delete the old chords, I can copy a chord group from before the key change, and when I paste it in, THEN the chords are transposed.

I am stunned by how poor and glitchy this thing has become.