Extensions are not synced at all in a new computer

[cyfrost]

🐛 Describe the bug
I have a work computer (Ubuntu 18.04 LTS) where I use VSCode (Official Microsoft release) with customized settings and multiple extensions (a typical web development workflow); these are constantly uploaded to a github gist. I want to sync those (settings + extensions) to a computer running Windows 10 Home Edition with VSCode (official release EXE). After installing VSCode on my home PC, I install the Settings Sync extension and auth with my github account to get the gist. It successfully pulls all the settings but not a single extension is downloaded or installed. Not sure if this helps, but when I authenticate with my github account and closed the tab, the VSCode window was just empty (I expected it to show the Tasks window where it starts downloading the extensions). I've also faced this exact same issue on another box running Arch Linux with official MS VSCode package (from the AUR).

🌴 Visual Studio Code Version : 1.41.1
🌴 Code Settings Sync Version : 3.4.3
🌴 Standard or Insiders : Standard
🌴 Portable or Installed : Installed (aka "System Setup" on Windows 10)
🌴 OSS or Official Build : Official Build
🌴 Operating System : Windows 10 Home Edition (latest build 1909) (not Windows Insiders)
🌴 Occurs On: Download
🌴 Proxy Enabled: No
🌴 Gist Id: https://gist.github.com/cyfrost/e11036e9bb86e9b289289c1b148ce968

📰 To Reproduce
Steps to reproduce the behavior:

1. On a Windows 10 PC, install official build of VSCode (direct download from their site)
2. Make sure the VSCode install is not polluted from any previous configuration (if so, try this)
3. Install the Settings Sync extension
4. Configure it to pull down my public gist (mentioned above)
5. Notice how it doesn't start downloading extensions at all despite a ton of them being listed in the gist.

Important Note
Make sure "Remove Extensions" option is NOT enabled in the Settings Sync extension settings. Also, make sure the gist you're pulling has this in the settings.json "sync.removeExtensions": false

💪 Expected behavior
As soon as user requests it to pull down settings from public/private gist, it should install the extensions as well.

📺 Console Error Log
There are no logs, it doesn't print anything to the visible Tasks popup window in VSCode.

📺 Additional context
Nothing unmentioned.