diff --git a/src/tests/frontend/runner.css b/src/tests/frontend/runner.css
index aac044c13..6331b8183 100644
--- a/src/tests/frontend/runner.css
+++ b/src/tests/frontend/runner.css
@@ -171,7 +171,7 @@ body {
 }
 
 #mocha-report {
-  flex: 0 1 auto;
+  flex: 1 1 auto;
   overflow: auto;
   margin: 0;
 }
diff --git a/src/tests/frontend/runner.js b/src/tests/frontend/runner.js
index 9cfd65d19..2784b508e 100644
--- a/src/tests/frontend/runner.js
+++ b/src/tests/frontend/runner.js
@@ -253,7 +253,7 @@ $(() => (async () => {
       .css({'display': 'flex', 'flex-direction': 'column', 'height': '100%'})
       .append($('<div>').css({flex: '1 0 0'}))
       .append($('<div>')
-          .css({'flex': '0 1 auto', 'font-weight': 'bold'})
+          .css({'flex': '0 0 auto', 'font-weight': 'bold'})
           .text('Loading frontend test specs...'))
       .append($log.css({flex: '0 1 auto', overflow: 'auto'}))
       .append($bar.css({flex: '0 0 auto', width: '100%'}))