Two add-ons have listeners for ControllerPublic/Forum. Both add-ons extend actionAddThread().
Add-on 1 changes a parameter passed to actionAddThread.
Add-on 2 pretty much replaces actionAddThread.
The execution order for add-on 1's listener is set to 1.
The execution order for add-on 2's listener is set to 10.
When actionAddThread is called, the listener for add-on 1 does not execute at all and XF goes directly to add-on 2's listener.
Is this a bug, limitation or something I'm totally missing when I look at them?