Port does not release

I have been having a recuring issue where at some point potentially because of some error the app crashes but the port the server is running on does not release. In order to reset the IP and kill the connection I have to completely reboot my system. Does anyone else know anything about this issue? I am using Pycharm and I have only had this issue when running a monsterui app.

Start by reproducing the port behavior with a MonsterUI app in PyCharm, recording which server port remains occupied after the app crashes. Check whether the process or connection can be identified and released without rebooting; done means the failure can be reproduced and the port is released reliably afterward.

Written by the indexing model from the issue text.