Then maybe the problem is in the isBlockedGlobally() function. It should return false if the user has the global-ipblock-exempt permission I suppose.
Here: https://doc.wikimedia.org/mediawiki-core/master/php/User_8php_source.html#l02030
First it checks if the user has mGlobalBlock defined and if not then checks if the user is an IP, if not then gets the user's IP and checks if the IP is blocked. Maybe It should first check the user groups if the user is not an IP and then set mGlobalBlock accordingly.

@valhallasw Thanks for you help, I just created the new jobs under different names and they are working ok but there's another job stuck, is running in tools-sgeexec-0938 under the name "efevid" (job number 203212). Maybe you guys want to check it.

The bot runks well with

jstart -stderr -continuous -N PeriodiBOT -M mariofinale@hotmail.com -m beas -mem 2g mono ~/PeriodiBOT/PeriodiBOT-IRC.exe

But i've never saw my bot using that much RAM, the maximum ever that it used was 120mb on Ubuntu Xenial.

@bd808 I would need to make some minor changes to my bot, but it should work just OK with the package available for Ubuntu Trusty.