Attribute 'host_name' could not be set

[dragoangel]

On Icinga Web 2.12 faced next error:

Error in checkOrCreateService for alert_x_id: update /services/alertmanager!alert_x_id : Attribute 'host_name' could not be set: Error: Attribute cannot be modified

And as I understand it repeats all the time. Looks like this attribute now is read-only after creation.

From my perspective Signalilo still works even if this error is thrown, maybe we need adjust service to not try settings this attribute for existing services to avoid such issues?