diff --git a/app/assets/stylesheets/bootstrap_and_overrides.css.less b/app/assets/stylesheets/bootstrap_and_overrides.css.less
index cd2c52d4..f9f38a60 100644
--- a/app/assets/stylesheets/bootstrap_and_overrides.css.less
+++ b/app/assets/stylesheets/bootstrap_and_overrides.css.less
@@ -218,6 +218,10 @@ tr.unavailable {
 
 // ********* Tweaks & fixes
 
+// Fix bootstrap dropdown menu on mobile
+// https://github.com/twbs/bootstrap/issues/4550#issuecomment-31916049
+.dropdown-backdrop { position: static; }
+
 // need more space for supplier&order information (in German, at least)
 .dl-horizontal {
   dt { width: 160px; }