Hello, Ilya,
We suggest disabling all third-party plugins (including cache plugins) that do not come bundled with XStore (https://www.8theme.com/documentation/xstore/plugins/included-plugins/ ), clearing the cache of the browser, and then checking again. It is possible that one of the additional plugins is causing the issue.
Or use custom CSS code:
.et_element-top-level .menu > .current-menu-item > a,
.et_element-top-level .menu > li > a:hover {
color: #eeff02 !important;
}
Best Regards,
8Theme’s Team