@nganngan @behnamazimi guyz, till there is a proper fix, I extended your script @behnamazimi like following. Even if many ion-tabs bar exists in the dom, all gonna be set as hidden. That makes the tricks for me.
let elements = document.querySelectorAll(".tabbar");
if (elements != null) {
Object.keys(elements).map((key) => {
elements[key].style.display = 'none';
});
}