show MQTT connection error only once on the first connect failure

CHANGELOG_LATEST.md

@@ -20,6 +20,7 @@ This release is based on the latest Espressif/Arduino core version 3. It brings
 - Ethernet MAC address changed with the new SDK, breaking DHCP reservations (currently disabled)
 - "IPv4 nameserver" showed an IPv6 address when IPv6 was in use
 - HA Discovery warning on Uptime after EMS-ESP boot due to NTP not ready
+- show MQTT connection error only once on the first connect failure
 
 ## Changed
 

src/core/mqtt.cpp

@@ -472,8 +472,8 @@ bool Mqtt::get_publish_onchange(uint8_t device_type) {
     return false;
 }
 void Mqtt::on_disconnect(espMqttClientTypes::DisconnectReason reason) {
-    // only show the error once, not every 2 seconds
-    if (!connecting_) {
+    // only show the error once on the first connect failure
+    if (connectcount_) {
         return;
     }
     connecting_ = false;