Menu animation only behaves correctly AFTER 2nd click

Hello alltogether,

I need help with a burger-menu-animation. I want it to slide in after click which it does. I already set everything up the way I want it and tuned the animation and timings.
Unfortunately the animation does not run as exected the first time you click. Every consequent time it does it beatifully, but not the first time.

I hope somebody has an idea why it does that or how to fix it?

Here is my public share link: linkexpired

Solved it. found my loop i did wrong.