Describe the bug

Hi,

Since a few versions/months, bots with mqtt enabled doesn't exit cleanly after typing "exit". When I'm back in linux terminal, I have to wait ~30 sec and hit ctrl-c 2-3 times to terminate the bots.
mqtt is running fine though.

Note: the containers (bots & hummingbot-broker) are running in docker bridged network

Steps to reproduce

1. Have the hummingbot-broker running in bridged-network
2. config mqtt_bridge.mqtt_host and mqtt_bridge.mqtt_autostart: True in hummingbot
3. Exit the bot
4. Restart and attach hummingbot container
5. Type exit and observe

Release version

2.10

Type of installation

Docker

Attach required files

No response