The original issue was regarding Docked Views which should open as a “modal”, but which fail to do so when opened/toggled as part of an Event. It looks to me that the modal setting is working correctly as long as you use the Docked View’s handle; it’s only Docked View Events or scripts which use system.perspective.openDock() or toggleDock() which have an issue.
So I guess the workaround is to only use the handles of the Docked View.
Update: Actually, it looks like if the Docked View is not the default 150px size we supply then the modal appearance is not working. I’ll update the ticket with this new info. So the NEW workaround is to only use the handles and ONLY use the default size.