iOS only (confirmed in 14.3)
Scroll the page first and click "Get Started" or "Contact".
The submenu appears in the wrong position.
The submenu appears right below the navbar.
ZK >= 9.0.0 (9.1.0 not included)
The previous version (ZK 9.5.1) test was passed.
Not sure if the root cause is the Safari version or not.