diff --git a/app/javascript/styles/mastodon/components.scss b/app/javascript/styles/mastodon/components.scss
index aa441a2268..e8adceb668 100644
--- a/app/javascript/styles/mastodon/components.scss
+++ b/app/javascript/styles/mastodon/components.scss
@@ -2350,6 +2350,7 @@
   position: relative;
   z-index: 2;
   outline: 0;
+  overflow: hidden;
 
   & > button {
     display: flex;