From 3b29ce470dc3e4a39ed1c982a74795fa1ee7a2eb Mon Sep 17 00:00:00 2001
From: Neil Twigg <neil@nats.io>
Date: Thu, 12 Jan 2023 17:32:46 +0000
Subject: [PATCH] Tweak logic for sending leaf node subscription updates

---
 server/leafnode.go | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/server/leafnode.go b/server/leafnode.go
index 89acd7f7..9a5b7639 100644
--- a/server/leafnode.go
+++ b/server/leafnode.go
@@ -1857,7 +1857,7 @@ func (c *client) updateSmap(sub *subscription, delta int32) {
 
 	n := c.leaf.smap[key]
 	// We will update if its a queue, if count is zero (or negative), or we were 0 and are N > 0.
-	update := sub.queue != nil || n == 0 || n+delta <= 0
+	update := sub.queue != nil || (n <= 0 && n+delta > 0) || (n > 0 && n+delta <= 0)
 	n += delta
 	if n > 0 {
 		c.leaf.smap[key] = n