Using OSX.10.5 and CC15.1

Step to repro:

New Image, any size, any color.

- Add any adjustment layer which has a text field.

- Type any 2 or 3 digit number into the text field to change value.

- Undo using cmd-z.

Result: undo doesn't return to initial value.

For example: I start with a value of 0 and type in 50. Undo results in 5 instead of 0. If i start with 0 and type in 100, undo returns to 10 instead of 0.

Step to repro:

New Image, any size, any color.

- Add any adjustment layer which has a text field.

- Type any 2 or 3 digit number into the text field to change value.

- Undo using cmd-z.

Result: undo doesn't return to initial value.

For example: I start with a value of 0 and type in 50. Undo results in 5 instead of 0. If i start with 0 and type in 100, undo returns to 10 instead of 0.