Click on web panel button

[oudstand]

Hey, I'd like to execute a click on a web panel button to make it open. Sadly a simple .click() on the button doesn't work. I've also tried multiple combinations from .dispatchEvent(e) where I've created some new Event('MouseEvent') and tried to init it.
Do you have an idea how to solve the problem? A .click() isn't working since the latest Snapshot version.