diff --git a/plugins/managesieve/tests/src/parser_comments b/plugins/managesieve/tests/src/parser_comments
new file mode 100644
index 000000000..e8321e1b7
--- /dev/null
+++ b/plugins/managesieve/tests/src/parser_comments
@@ -0,0 +1,16 @@
+require ["envelope","fileinto","imap4flags","subaddress"];
+
+# simple to-be-ignored comment with an empty line after (#5657)
+
+# another comment
+if envelope :detail "to" "addressextension"
+{
+	setflag "\\Flagged";
+}
+
+# Spam
+if header :is "X-Spam-Flag" "YES"
+{
+	fileinto "Junk";
+	stop;
+}
diff --git a/plugins/managesieve/tests/src/parser_comments.out b/plugins/managesieve/tests/src/parser_comments.out
new file mode 100644
index 000000000..677783622
--- /dev/null
+++ b/plugins/managesieve/tests/src/parser_comments.out
@@ -0,0 +1,10 @@
+require ["envelope","fileinto","imap4flags","subaddress"];
+if envelope :detail "to" "addressextension"
+{
+	setflag "\\Flagged";
+}
+if header :is "X-Spam-Flag" "YES"
+{
+	fileinto "Junk";
+	stop;
+}