Including bootstrap needs to be per entry

assets/job/add.js

@@ -1,5 +1,6 @@
 import 'tempusdominus-bootstrap-4';
 import bsCustomFileInput from 'bs-custom-file-input';
+import 'bootstrap';
 
 $(function() {
     initDatePickers();

assets/job/index.js

@@ -1,3 +1,5 @@
+import 'bootstrap';
+
 $(function() {
     initDeleteButtons();
 })

webpack.config.js

@@ -70,8 +70,7 @@ Encore
         $: 'jquery',
         jQuery: 'jquery',
         'window.jQuery': 'jquery',
-        moment: 'moment',
+        moment: 'moment'
-        boostrap: 'bootstrap'
     })
 ;