UserAgent: Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/67.0.3396.87 Safari/537.36

Steps to reproduce the problem:
1. install chrome for enterprise and add admx
2. disable welcome page
3. 

What is the expected behavior?

What went wrong?
Hello, I'm trying on a windows 10 standalone machine (not joined to a domain) to restrict some policies about google chrome for a specific user. I installed the chrome for enterprise version, I downloaded the ADMX and put them in the policydefinitions folder. I could correctly apply some GP for a specific user, but some of them are not working correctly:
-when i use enable the "WelcomePageOnOSUpgradeEnabled" it doesn't work and it still show the "welcome=variant" page at startup (the one where you need to click "no thanks" to continue). If i also enable the "temporary profile" policy it keeps showing at each opening, without temporary profile it shows only the first two times i open chrome.
if it can be helpful i also noticed that home page settings does not work (but i don't need it), while others like not saving history is working correctly.

I tried searching on the registry and the WelcomePageOnOSUpgradeEnabled under HKLM\Software\Policies\Google\Chrome\ is present at 0, so it looks like chrome is ignoring it.

I tried checking presence of the "first run" file in the appdata folder as suggested from other people having similar problems, but still appearing this welcome page.

I also noticed that while loading .admx file and the .adml in italian language all the strings are translated in italian except the one about "WelcomePageOnOSUpgradeEnabled" that is still showing in english "Enable showing the welcome page on the first browser launch following OS upgrade"... has this option been discontinued?

I can't find a way to get rid of it.

Could you please help me? i need it for a kiosk and can't join it to a domain.

Thanks.

Did this work before? N/A 

Chrome version: 67.0.3396.87  Channel: n/a
OS Version: 10.0
Flash Version: