CSS files missing from bower.json

[abrararies]

The css files (to be injected) are missing from the "main" array in the bower.json (ver 3.3.5)

This is how it looks now
....
],
"homepage": "http://getbootstrap.com",
"license": "MIT",
"moduleType": "globals",
"main": [
"less/bootstrap.less",
"dist/js/bootstrap.js"
],
....

This was how it used to look
....
"homepage": "http://getbootstrap.com",
"main": [
"less/bootstrap.less",
"dist/css/bootstrap.css",
"dist/js/bootstrap.js",
"dist/fonts/glyphicons-halflings-regular.eot",
"dist/fonts/glyphicons-halflings-regular.svg",
"dist/fonts/glyphicons-halflings-regular.ttf",
"dist/fonts/glyphicons-halflings-regular.woff",
"dist/fonts/glyphicons-halflings-regular.woff2"
],
....

Am I missing something here? There should be css files defined in there.
As far as I know, grunt or gulp use the main array to inject files into the project.

[cvrebert]

Duplicate of #16663.