When I stop the server via /stop or /restart it has a good chance of not properly closing the cmd window but stopping the server. The cmd window left open functions as a normal cmd prompt. 

A link to my start.bat:

https://pastebin.com/BT1dvvft

Link to log:

https://pastebin.com/2QqRR1kc

This also happens on my 1.14 server, with the same settings/plugins and logs.

Plugins used just in case:

Autorestart-v3

GroupManager

Rules