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• I have read the Contributing Guidelines for this project.
• I agree to follow the Code of Conduct that this project adheres to.
• I have searched the issue tracker for an issue that matches the one I want to file, without success.

Issue Details

I saw this issue in vscode version 1.39

I am creating a vscode extension with the following code

 const openDialogOptions: vscode.OpenDialogOptions = {
        canSelectFiles: true,
        canSelectFolders: false,
        canSelectMany: false,
        openLabel: 'Select',
        filters: { Packages: ['tar.gz', 'tgz'] }
    };

 const fileBrowser: vscode.Uri[] = await vscode.window.showOpenDialog(openDialogOptions);

When trying out the extension the open file dialog box appears but a tar.gz file will be greyed out but tgz files won't be greyed out

• Electron Version:

4.2.10

• Operating System:
• Last Known Working Electron version:

Expected Behavior

I expect to be able to select both tgz and tar.gz files from an open file dialog box

Actual Behavior

I can't select tar.gz files

To Reproduce

see this vscode issue microsoft/vscode#94277

Screenshots

Additional Information