ST3 Crashes if I make changes to CSS file

I've ST3 and I recently installed this plugin. When I make my changes to CSS file ST will crash. It doesn't happen every time. I noticed it happens when:

Hit ctrl+s multiple time(I've this weird habit).
Some times on creation of new CSS file.

for details, Here is my list of installed packages:

{
    "bootstrapped": true,
    "in_process_packages":
    [
    ],
    "install_missing": true,
    "installed_packages":
    [
        "1337 Color Scheme",
        "ACF Snippets",
        "AdvancedNewFile",
        "Align Arguments",
        "Alignment",
        "AlignTab",
        "ASCII Decorator",
        "ASP Snippets",
        "AutoFileName",
        "Autoprefixer",
        "Babel",
        "Babel Snippets",
        "BracketHighlighter",
        "Chain of Command",
        "Color Highlighter",
        "Console Wrap for js",
        "DocBlockr",
        "Emmet",
        "Emmet Css Snippets",
        "Emmet Style Reflector",
        "Emoji",
        "FileDiffs",
        "Git",
        "GitGutter",
        "Handlebars",
        "HTML Snippets",
        "HTMLBeautify",
        "Inc-Dec-Value",
        "JavaScriptNext - ES6 Syntax",
        "JSHint",
        "JSX",
        "Local History",
        "LoremIpsum",
        "Markdown Preview",
        "MarkdownEditing",
        "Material Theme",
        "Material Theme - Appbar",
        "Materialize-Appbar",
        "Oceanic Next Color Scheme",
        "Origami",
        "Package Control",
        "Preap",
        "React Templates",
        "ReactJS",
        "ReactJS Snippets",
        "RegReplace",
        "SCSS",
        "SCSS Snippets",
        "SideBarEnhancements",
        "SublimeCodeIntel",
        "SublimeLinter",
        "Theme - Brogrammer",
        "Theme - Dark Material",
        "Theme - Gravity",
        "Theme - Solarized Flat",
        "Theme - Spacegray",
        "Trimmer",
        "View In Browser"
    ]
}

This may not have the entry of CSS Extended Completions. As I was removing CSS related plugins one by one to test.

subhaze / CSS-Extended

ST3 Crashes if I make changes to CSS file #52