Spark customization problem

I’m trying to customize Spark client.
To disable “Broadcast” menu item, I set “DISABLE_BROADCAST_MENU_ITEM = true” in which is located in Spark\lib\spark.jar\org\jivesoftware\resource. After that, users will no longer receive any broadcast messages. In the description of the property said that it only hide the menu item.

Spark 2.8.3 Windows platform

Client Control enables the same setting, so this is essentially covered by this ticket

There are no active developers for Spark currently. So can’t say when this can be fixed.

Thanks for the answer!