diff --git a/webapp/src/components/assignee_modal/assignee_modal.jsx b/webapp/src/components/assignee_modal/assignee_modal.jsx
index 943e08fb..65952d2c 100644
--- a/webapp/src/components/assignee_modal/assignee_modal.jsx
+++ b/webapp/src/components/assignee_modal/assignee_modal.jsx
@@ -122,7 +122,7 @@ AssigneeModal.propTypes = {
 
 const getStyle = (theme) => ({
     backdrop: {
-        position: 'absolute',
+        position: 'fixed',
         display: 'flex',
         top: 0,
         left: 0,