Dropdown is not closing on click inside the dropdown list

Hey there,

I don´t know why, but my dropdown is not closing after clicking inside the dropdown list.
Any suggestions?
The page I´m talking about: Rahmenprogramm | Glacis Open Air - Magdeburg
The dropdown is inside the sticky bar.

Here is my site Read-Only: LINK
(how to share your site Read-Only link)

If I remember right this is standard behaviour for dropdowns. I’m pretty sure I’ve had to use some jquery in previous projects to simulate a tap of the dropdown button when you click a link inside, which shut the dropdown.

You could set it to open on hover so it shuts when the mouse moves away?