diff --git a/app/javascript/flavours/glitch/styles/modern-urusai-fixes.scss b/app/javascript/flavours/glitch/styles/modern-urusai-fixes.scss
index 188382858b8230..1ac63a5882ee69 100644
--- a/app/javascript/flavours/glitch/styles/modern-urusai-fixes.scss
+++ b/app/javascript/flavours/glitch/styles/modern-urusai-fixes.scss
@@ -6,6 +6,10 @@
   max-width: unset !important;
 }
 
+.layout-single-column .columns-area__panels__main {
+  contain: inline-size style !important;
+}
+
 body.app-body.flavour-glitch > #mastodon .notification__message > span,
 .notification__message > span > span,
 .status__prepend > span,
diff --git a/app/javascript/styles/modern-urusai-fixes.scss b/app/javascript/styles/modern-urusai-fixes.scss
index 188382858b8230..1ac63a5882ee69 100644
--- a/app/javascript/styles/modern-urusai-fixes.scss
+++ b/app/javascript/styles/modern-urusai-fixes.scss
@@ -6,6 +6,10 @@
   max-width: unset !important;
 }
 
+.layout-single-column .columns-area__panels__main {
+  contain: inline-size style !important;
+}
+
 body.app-body.flavour-glitch > #mastodon .notification__message > span,
 .notification__message > span > span,
 .status__prepend > span,