Undo functionality does not work on changing properties values of CubeMap

Steps to Repro:

1. Create a new Project
2. Project > right-click > Create > Legacy > Cubemap
3. Select New Cubemap > Inspector > Face size = 128, MipMap = true, Readable = true
4. Press Ctrl + Z, 2-3 times

Expected Result:
Changes in properties values should be reset

Actual Result:
Undo functionality does not work on properties values of Cubemap

Reproducible on: 2021.1.0a1, 2020.2.0b8, 2020.1.10f1, 2019.4.11f1

Environment: Windows 10 and Mac 10.15