diff --git a/ghost/admin/app/styles/layouts/post-preview.css b/ghost/admin/app/styles/layouts/post-preview.css
index 05135e5a22..085c4836cd 100644
--- a/ghost/admin/app/styles/layouts/post-preview.css
+++ b/ghost/admin/app/styles/layouts/post-preview.css
@@ -220,8 +220,8 @@
     grid-template-columns: 65px 1fr;
 }
 
-.gh-preview-newsletter-trigger,
-.gh-preview-newsletter-trigger:focus {
+.ember-power-select-trigger.gh-preview-newsletter-trigger,
+.ember-power-select-trigger.gh-preview-newsletter-trigger:focus {
     padding: 0;
     border: none;
     cursor: pointer;
diff --git a/ghost/admin/app/styles/patterns/forms.css b/ghost/admin/app/styles/patterns/forms.css
index 807db63e0a..922d4d4077 100644
--- a/ghost/admin/app/styles/patterns/forms.css
+++ b/ghost/admin/app/styles/patterns/forms.css
@@ -301,6 +301,7 @@ textarea {
 
 textarea.gh-input-x {
     padding-block: 8px;
+    max-width: unset;
 }
 
 .ember-power-select-multiple-trigger {