Small Bug: Curve changes do not reset

Here is a small bug, it seems benign, but I thought I reported it anyway.
Steps to reproduce:
1. Make a change (or multiple changes) in the Curves window (any of the curves will do).
2. Right click on the newly created point(s) to undo all changes.
3. Curve now shows in pristine condition.
4. However, code values are not exactly identical as before.
5. No operation undoes the changes except for a global curves reset or node reset.
Changes undone in the Color Wheels and the bottom parameters work correctly, the problem is only with the Curves.
Tested with Beta 7 on Windows 10 Pro.
Steps to reproduce:
1. Make a change (or multiple changes) in the Curves window (any of the curves will do).
2. Right click on the newly created point(s) to undo all changes.
3. Curve now shows in pristine condition.
4. However, code values are not exactly identical as before.
5. No operation undoes the changes except for a global curves reset or node reset.
Changes undone in the Color Wheels and the bottom parameters work correctly, the problem is only with the Curves.
Tested with Beta 7 on Windows 10 Pro.