When adding requester in ticket groups will not update

[grego1981]

Updating from [GLPI 10.0.10] to [GLPI 10.0.17] there is a problem when adding a requester to a ticket. Although the option to add group was at "first" no group is added, I even tested selecting "all" with the same behaviour. I cannot find any errors in apache logs or in php error logs. Is there a fix for that?