Remove anchors from EE calendar category filters to prevent themes from forcing the links to scroll.

tw_ee_cal_remove_anchors.php

<?php //Please do not include the opening PHP tag if you alreayd have one.

function tw_ee_cal_remove_anchors(){
    wp_add_inline_script(
        'espresso_calendar',
        'jQuery( \'#ee-category-legend-ul a[href*="#espresso_calendar"]\' ).each(function() {
            this.href = this.href.split("#")[0];
        });'
    );
}
add_action( 'wp_enqueue_scripts', 'tw_ee_cal_remove_anchors', 20);

tw_ee_cal_remove_js_click_events.php

<?php //Please do not include the opening PHP tag if you alreayd have one.

function tw_ee_cal_remove_js_click_events(){
    wp_add_inline_script(
        'espresso_calendar',
        'jQuery(\'.ee-category a\').off(\'click\');'
    );
}
add_action( 'wp_enqueue_scripts', 'tw_ee_cal_remove_js_click_events', 20);