diff --git a/app/assets/javascripts/app/lib/app_post/column_select.coffee b/app/assets/javascripts/app/lib/app_post/column_select.coffee
index 135f317ec..316f8708a 100644
--- a/app/assets/javascripts/app/lib/app_post/column_select.coffee
+++ b/app/assets/javascripts/app/lib/app_post/column_select.coffee
@@ -50,6 +50,7 @@ class App.ColumnSelect extends Spine.Controller
     @pool.find("[data-value='#{value}']").addClass 'is-hidden'
     @values.push(value)
     @shadow.val(@values)
+    @shadow.trigger('change')
 
     @placeholder.addClass 'is-hidden'
 
@@ -64,6 +65,7 @@ class App.ColumnSelect extends Spine.Controller
     @selected.find("[data-value='#{value}']").addClass 'is-hidden'
     @values.splice(@values.indexOf(value), 1)
     @shadow.val(@values)
+    @shadow.trigger('change')
 
     if !@values.length
       @placeholder.removeClass 'is-hidden'
diff --git a/app/assets/stylesheets/zammad.scss b/app/assets/stylesheets/zammad.scss
index 40b5d14eb..eac093397 100644
--- a/app/assets/stylesheets/zammad.scss
+++ b/app/assets/stylesheets/zammad.scss
@@ -1195,6 +1195,17 @@ fieldset {
   }
 }
 
+/*
+
+Firefox Specific Hack
+to fix the overflow of column select with long names
+https://stackoverflow.com/questions/17408815/fieldset-resizes-wrong-appears-to-have-unremovable-min-width-min-content/17863685#17863685
+
+*/
+@-moz-document url-prefix() {
+  fieldset { display: table-cell; }
+}
+
 fieldset > .form-group {
   padding: 0 4px;