Using spigot 1.10 latest build tools on java 8
using latest essentials for 1.9
Players can use repair signs ignoring the players balance.
Player with essentials.silentleave still informs the server when leaving
even with enable in config

Please never say latest version, that's almost never useful. Please provide the whole startup log and Essentials config.

Essentials v2.0.1-b370
git-Spigot-c3e4052-1953f52 (MC: 1.10) (Implementing API version 1.10-R0.1-SNAPSHOT)
http://pastebin.com/63gv6GA9

Whenever someone asks you to provide information that spans over a dozen lines, you should use a pastebin such as http://pastebin.com. I've done that for you and edited your comment.

I asked for your startup log as well.

I just realised you said essentials.silentleave. The permission you want is actually essentials.silentquit.

yep same result with essentials.silentquit.

what spigot version do you use?

I just tested it. If I have essentials.silentquit and the config specifies allow-silent-join-quit: true it works.

git-Spigot-5391d73-00359a1 (1.10.2)

i use spigot for 1.10 on java 8 well if it does not work for me then its ok i just disable the features that dont work thanks again