Git commits with correct user from terminal but not from VS Code

The question about how to use multiple identities for Git has already been asked several times... I read some instructions and followed this one

https://itnext.io/setup-git-with-multiple-configs-9b4111d6928c

At home I'm using Linux and Github. At work I'm using Windows 10 and Gitlab. Two Git identities are required for work.

I changed the .gitconfig located at

C:\Users\jdoe

from

[user]
    name = johndoe
    email = johndoe@gmail.com
[credential]
    helper = store
[winUpdater]
    recentlySeenVersion = 2.24.1.windows.2
[core]
    editor = \"C:\\Users\\jdoe\\AppData\\Local\\Programs\\Microsoft VS Code\\Code.exe\" --wait

to

[includeIf "gitdir:~/Desktop/Repositories/Gitlab/"]
    path = ~/Desktop/Repositories/Gitlab/.gitconfig
[includeIf "gitdir:~/Desktop/Repositories/Github/"]
    path = ~/Desktop/Repositories/Github/.gitconfig
[credential]
    helper = store
[winUpdater]
    recentlySeenVersion = 2.24.1.windows.2
[core]
    editor = \"C:\\Users\\jdoe\\AppData\\Local\\Programs\\Microsoft VS Code\\Code.exe\" --wait

Next I created a directory Gitlab at

C:\Users\jdoe\Desktop\Repositories\Gitlab

and a directory Github at

C:\Users\jdoe\Desktop\Repositories\Github

Within both directories I created a .gitconfig. For Gitlab I use my Gitlab credentials (work account)

[user]
    name = jdoe
    email = john.doe@company.com

For Github I use my private account credentials

[user]
    name = johndoe
    email = johndoe@gmail.com

I tested both platforms with demo repositories. When committing both platforms receive a commit from an unknown nonexisting user with the username

Doe

I don't know where this username comes from. I would expect Gitlab showing the username jdoe and Github showing the username johndoe.

I also tried to remove all generic credentials with this guide

https://stackoverflow.com/a/41968176/9945420

After doing so I was prompted for the Github credentials. Unfortunately Github and Gitlab still receive commits from a nonexisting user called Doe.

Any help would be appreciated

Update:

I tested this way on my private Linux machine and it worked. But for my Windows 10 work machine it didn't.

Second update:

I tested this without using VS Code. When committing via terminal it also works on my Windows 10 machine...

When I open a terminal window within VS Code, modify a file and run

$ git add .
$ git commit -m "test"
$ git push

it commits correctly. When I commit via VS Code Git integration and run

$ git push

later on, it commits with a non existing user.