[Bug] Shared topic subscription with wildecard

[toniocrq]

What did I do

I need to manage a shared subscription topic to handle two different flows The topic is +/+/GICS/CMD/FEEDBACK/# and the 2 subscriptions are: 1) $share/usem-group-tmp/+/+/GICS/CMD/FEEDBACK/# 2) $share/usem-group/+/+/GICS/CMD/FEEDBACK/#

What happened

It happen that every time a try on mqttX client to send a message on topic LO201/TEST/GICS/CMD/FEEDBACK/TEST sometimes they both receive the message(correct) and sometime only 1 sub receive the message twice (that's the problem). While if try to simplify the topic name i have no problem, both receive the same message and i don't see any problem

Environment

I discovered this problem within k8s cluster and i replied the problem on my local machine(W11) using mqttx

[ysfscream]

Sorry for replying late. It seems that you have used different group names in the shared subscription. Therefore, in theory, the same message will be received simultaneously. Does this meet your expectation? I tested it. According to the information you provided, I sent 28 messages at the same time. Two different subscription clients received the messages. I am using EMQX. I am not sure what your MQTT Broker is? Is it related to the MQTT Broker? Or what's your MQTTX version?