charset = "utf-8-bom" in .editorconfig not working

[gabbsmo]

Please fill-in this template.

• I have a question that is specific to this extension; thus, inappropriate for the main EditorConfig issue tracker.
• I tried running code --disable-extensions and the issue did NOT present itself.

Issue

	Visual Studio Code	editorconfig-vscode
Version	1.29.1 (user setup)	0.12.5

Root .editorconfig File

root = true

[*]
charset = "utf-8-bom"

Are there any other relevant .editorconfig files in your project? No

File opened

./foo.txt

Expected behavior

charset = "utf-8-bom"

Actual behavior

charset = "utf-8"

Additional comments or steps to reproduce

1. Create folder and open it with Code
2. Add the .editorconfig file
3. Restart Code
4. Add a file
5. It is created with charset utf-8 and not utf-8-bom. Editing and saving does not change charset either.

[jednano]

Duplicate of #35