max width is defined for popver content

CHANGELOG

@@ -25,6 +25,8 @@ minerva (15.1.0) unstable; urgency=medium
     project did not allow to change other project details (#996)
   * Bug fix: when multi extension did not contain species type list import of
     SBML crashed
+  * Bug fix: when content of element popover is too wide the scrollbar is
+    visible (#1269)
 
  -- Piotr Gawron <piotr.gawron@uni.lu>  Thu, 18 Jun 2020 16:00:00 +0200
 

frontend-js/src/main/css/global.css

@@ -1112,6 +1112,7 @@ a.adminLink:hover {
 }
 
 .popover-body {
+    max-width: 795px;
     display: inline-block;
     overflow: auto;
     max-height: 80vh;