Binding Custom Event in GameplayAbility to MouseEvent fails

Hi, for testing purpose I want to have a gameplayability (I am using the GAS), which binds mouseclick events to a custom event of the gameplay ability when the ability is activated. Then, the next click of the mouse triggers the actual ability (this is a test for handling target unit, location, … spells).
Here is how I do it currently:

However, while the BindEventOnClicked node is reached correctly when I perform the first mouse click, nothing happens when I click again, so the bound “OnMouseClick” is not triggered for some reason.
The AbilityOwnerController is valid and set correctly, I checked it. I also checked the PlayerController and EnableClickEvents is set to true.

Why does the binding apparently fail or why is the event not triggered when I click? Any ideas are welcome :slight_smile:

Anyone?

Do you need more information?