进行了一些小优化

assets/js/core/comments.js

@@ -232,6 +232,8 @@
             restoreRespondPosition();
             setLoading(false);
             notyf(json.message || '评论已更新', 'success');
+            var respondEl = document.getElementById('respond');
+            if (respondEl && window.AksrtFixedInput) window.AksrtFixedInput(respondEl, 'hide');
             return;
           }
           if (json && json.success && json.html) {
@@ -263,6 +265,14 @@
             // Move respond back to original position
             restoreRespondPosition();
 
+            // Hide mobile FixedInput after successful submit.
+            var respondEl = document.getElementById('respond');
+            if (respondEl && window.AksrtFixedInput) {
+              window.AksrtFixedInput(respondEl, 'hide');
+            } else if (respondEl) {
+              respondEl.classList.remove('show');
+            }
+
             // If editing via moveForm, clear edit field.
             var editField = form.querySelector('[name="edit_comment_ID"]');
             if (editField) editField.remove();