diff -u b/core/themes/claro/css/components/form.css b/core/themes/claro/css/components/form.css
--- b/core/themes/claro/css/components/form.css
+++ b/core/themes/claro/css/components/form.css
@@ -80,6 +80,7 @@
   margin-top: 1.5rem;
   margin-bottom: 1.5rem;
   max-width: 100%;
+  -ms-flex: 0 0 auto;
 }
 
 /**
diff -u b/core/themes/claro/css/components/form.pcss.css b/core/themes/claro/css/components/form.pcss.css
--- b/core/themes/claro/css/components/form.pcss.css
+++ b/core/themes/claro/css/components/form.pcss.css
@@ -20,6 +20,7 @@
   margin-top: var(--space-l);
   margin-bottom: var(--space-l);
   max-width: 100%;
+  -ms-flex: 0 0 auto;
 }
 /**
  * When a table row or a container-inline has a single form item, prevent it