CSS selector in dist CSS is duplicated

Hello
Thank you for amazing JS library
I decide choose Selectize for my project and checked CSS files 
I see something wrong in dist CSS  files

For example in selectize.default.min.css
https://cdnjs.cloudflare.com/ajax/libs/selectize.js/0.15.2/css/selectize.default.min.css
CSS Selector: `selectize-control.plugin-remove_button .disabled .item .remove` duplicated with same property and value