diff --git a/js/src/ui/SectionList/sectionList.css b/js/src/ui/SectionList/sectionList.css
index 14e8bffd1..4613371ad 100644
--- a/js/src/ui/SectionList/sectionList.css
+++ b/js/src/ui/SectionList/sectionList.css
@@ -44,6 +44,7 @@ $widthExpanded: 42%;
       box-sizing: border-box;
       display: flex;
       flex: 0 1 $widthNormal;
+      max-width: $widthNormal;
       opacity: 0.85;
       padding: 0.25em;