Currently when using the built in spigot restart command (spigot:restart) or the api Bukkit.getServer().spigot().restart() it seems that the plugins don't get a chance to shutdown correctly and/or this information isn't displayed within the console window.

When using the stop command, you can clearly see plugins disabling, db connections closing ect. However, when using the restart command and/or api none of this is seen.
I created a test plugin that displays a message in the onDisable() with mixed results.
On a server with multiple plugins, I wasn't able to see the message displayed at all, on a test server only running that plugin I was only sometimes able to see the message (plugin was loaded).

Added below are some screenshots and the source for the test plugin. I do apologise if I have missed something obvious.

Thanks for your time.

Source Test Plugin: http://pastebin.com/C4m9x5L7
Download Test Plugin: https://www.dropbox.com/s/hx9j2xnc3etgbji/SpigotRestart.jar?dl=0

Screenshot 1 (Plain Server, Test Plugin): https://i.gyazo.com/6d45f50bbf90a49284745ae508084ca5.png
*Screenshot 2 *:https://i.gyazo.com/9c96d61da4b03e046afaeda802bc4994.png
Screenshot 3 (Added Few Extra Plugins): https://i.gyazo.com/d69ed83657a7d8ec26c452b02a7389cd.png
Screenshot 4 (Using the API instead of the Command): https://gyazo.com/357f91869b46db453b90ed3e31314bfb

Note: My test server is only using 1 thread for Netty IO, however were I first noticed this was on a "real" server that uses 4. So I don't believe that is the issue. (Also just tested it with 4 and no change)