Disable tab completion when pressing tab in Sublime Text 3

Question

How do I disable auto complete or tab completion in Sublime Text 3? I want pressing tab to always insert the tab character unless the auto-complete dropdown box is showing something else selected.

What is happening (Javascript file):

After pressing tab:

I tried adding this to the Preferences.sublime-settings file:

"tab_completion": false

However, the behavior did not change.

My preferences file looks like this:

{
    "color_scheme": "Packages/Color Scheme - Default/Monokai.tmTheme",
    "font_size": 9,
    "ignored_packages":
    [
        "Vintage"
    ],
    "tab_completion": false
}

My Preferences > Settings - Syntax Specific file is empty:

// These settings override both User and Default settings for the JavaScript syntax
{

}

Answer 1

You are correct, Preferences > Settings and set "tab_completion": false. You then have to close the sublime application though, which maybe was the missing step here.