Hi, @kirillbigich!
Thanks so much for reporting this! This is a known issue when using animations with the built in navbar. The team is investigating this issue.
I can’t provide a timeline for when a fix will be available, but someone from the team will reach back out here as soon as we know more.
In the meantime, if you build this without using the Webflow Navbar the animation should work as expected. I know this isn’t ideal, but it should help you keep moving forward with your project. Let me know if you have any other questions!