Corporate mask not working

[Former user]

Trying to create corporate masks and its not working. Maks is added to DB when created on a admin account and can be searched for one time with another admin account in the target corporation but it wont save on the settings page. After second attempt on search i get an error "no mask found" even when its visible on DB.

On creating the mask console pushes out an error:

options-dialog.js:513 Uncaught TypeError: Cannot read property 'mask' of undefined
    at Object.<anonymous> (options-dialog.js:513)
    at u (jquery-3.3.1.min.js:2)
    at Object.fireWith [as resolveWith] (jquery-3.3.1.min.js:2)
    at k (jquery-3.3.1.min.js:2)
    at XMLHttpRequest.<anonymous> (jquery-3.3.1.min.js:2)

Any clue where i should start tackling the issue?

[mail seadc]

issue was with my.cnf file and the settings not saving after mysql reboot.

[Astriania]

confirmed config issue by OP