Rhino 6.6 bug - Undo Leader fails after adding curve point

Rhino PaperCuts
1
  1. Use Leader command to make a leader.
  2. Select the leader and use leader object property to add curve point.
  3. Undo everything. Undo fails to undo the Leader command.
2

Added https://mcneel.myjetbrains.com/youtrack/issue/RH-47487

Thanks.

3

6.9 has this fix, thanks.