Ctrl + Win + Num stopped working after Windows 10 updated to ver. 1803

Ctrl + Win + Num suddenly stopped working for me one day..

My Windows version is

Edition Windows 10 Home
Version 1803
Installed on 6/10/2018 
OS build 17134.112

I am on a Dell laptop. I have confirmed that there is nothing wrong on hardware. This is merely a software issue. For example, Win + Num hotkey works just fine. Inspecting with Ethervane ActiveHotkeys shows that Ctrl + Win + Num is just inactive. I suspect somehow the setting is wiped from my windows registry. I expect to locate where it is from Windows registry and manually restore it.

• Update1: My work PC received an update today (2019Jan24), ALSO Ver 1803, OS 17134.523, and it's broken as well!! Ver 1803 looks suspiciously... suspicious!

• Update 2: I can confirm that it's due to Windows update now. Checked with a colleague that's on 1809, that this hotkey no longer works neither. Either Microsoft has had it removed or it's broken since the updates. I wonder how I can fix it.

• Update 3: I think we created a loud enough voice that MS finally fixed it. It's finally working again now at Ver 1903.

Solution 1:

Updated answer:

This seem to be a bug when perusing the official list of keyboard shortcuts for Windows 10. Ctrl + Win + # is intended to

Open the desktop and switch to the last active window of the app pinned to the taskbar in the position indicated by the number.

The correct behavior can still be accessed using its alternate shortcut of Ctrl + Mouse Click on an app icon on the taskbar.

The original answer assumed the functionality was removed since it seemed to have an identical functionality as pressing Win + # followed by Shift + Win + #, and have therefor been corrected.

Solution 2:

This hotkey appears to work normally again on 1903 (I have Build 18362.239), though I can't find any KB articles mentioning the fix.