Fix affix using stickyfilljs polyfill

app/assets/javascripts/job.js

@@ -1,5 +1,6 @@
 import $ from 'jquery';
 import _ from 'underscore';
+import StickyFill from 'stickyfilljs';
 import axios from './lib/utils/axios_utils';
 import { visitUrl } from './lib/utils/url_utility';
 import bp from './breakpoints';
@@ -82,17 +83,11 @@ export default class Job {
     /**
       If the browser does not support position sticky, it returns the position as static.
       If the browser does support sticky, then we allow the browser to handle it, if not
-      then we default back to Bootstraps affix
+      then we use a polyfill
     **/
     if (this.$topBar.css('position') !== 'static') return;
 
-    const offsetTop = this.$buildTrace.offset().top;
-
-    this.$topBar.affix({
-      offset: {
-        top: offsetTop,
-      },
-    });
+    StickyFill.add(this.$topBar);
   }
 
   // eslint-disable-next-line class-methods-use-this

package.json

@@ -75,6 +75,7 @@
     "select2": "3.5.2-browserify",
     "sha1": "^1.1.1",
     "sql.js": "^0.4.0",
+    "stickyfilljs": "^2.0.5",
     "style-loader": "^0.21.0",
     "svg4everybody": "2.1.9",
     "three": "^0.84.0",

yarn.lock

@@ -8208,6 +8208,10 @@ statuses@~1.3.1:
   version "1.3.1"
   resolved "https://registry.yarnpkg.com/statuses/-/statuses-1.3.1.tgz#faf51b9eb74aaef3b3acf4ad5f61abf24cb7b93e"
 
+stickyfilljs@^2.0.5:
+  version "2.0.5"
+  resolved "https://registry.yarnpkg.com/stickyfilljs/-/stickyfilljs-2.0.5.tgz#d229e372d2199ddf5d283bbe34ac1f7d2529c2fc"
+
 stream-browserify@^2.0.1:
   version "2.0.1"
   resolved "https://registry.yarnpkg.com/stream-browserify/-/stream-browserify-2.0.1.tgz#66266ee5f9bdb9940a4e4514cafb43bb71e5c9db"