diff --git a/templates/repo/issue/fields/markdown.tmpl b/templates/repo/issue/fields/markdown.tmpl
index f6995328dd4..da8f5e6bdf7 100644
--- a/templates/repo/issue/fields/markdown.tmpl
+++ b/templates/repo/issue/fields/markdown.tmpl
@@ -1,3 +1,3 @@
 <div class="field {{if not .item.VisibleOnForm}}tw-hidden{{end}}">
-	<div>{{ctx.RenderUtils.MarkdownToHtml .item.Attributes.value}}</div>
+	<div class="markup">{{ctx.RenderUtils.MarkdownToHtml .item.Attributes.value}}</div>
 </div>
diff --git a/web_src/css/modules/comment.css b/web_src/css/modules/comment.css
index 68306686ef2..9947b15b9ad 100644
--- a/web_src/css/modules/comment.css
+++ b/web_src/css/modules/comment.css
@@ -53,6 +53,7 @@
   display: flex;
   flex-direction: column;
   flex: 1;
+  min-width: 0;
 }
 
 .ui.comments .comment > .avatar ~ .content {