Ctrl+Z undo multiple actions while was called only one time

Repro steps:
1. Select any gameobject on a scene.
2. Hold Ctrl button and press multiple times D(duplicate) button . It's important to not release Ctrl button between multiple presses on D.
3. You got some number of duplicates of selected object.
4. Press Ctrl+Z

Expected result:
The last duplicate of selected object disappeared.

Actual result:
All duplicates disappeared.

Reproduced in 5.4.3p1, 5.5.0f3 and 5.6.0a5 on WINDOWS only. Works on Mac.
Is not reproducible in 4.7.2f1