APEX 24.2
Previously Custom Event Dynamic Actions responded with a Selection Type of "JavaScript Expression" and an “Expression” of “document” when the Custom Event was triggered by another Dynamic Region regardless of what region triggered the Custom Event.
The “JavaScript Expression” Custom Events no longer respond. (Doesn't work for “window” either.) Now it is necessary to use a Selection Type of “Region” and select the region the triggering DA is in.
It gets worse…
When changing the Selection Type to Region, it resets all the Client Side Conditions in the True actions to “Select”, and if you attempt to save the Page without resetting the Client Side Condition back to the original constraint the Page errors saying that someone else made a change to the Page and it is necessary to reload the page and loose the changes made. It only errors if the True Action Client Side Condition had a constraint before.
Bugs?