Doesn't work as of Vue 2.6.14

[FightRay]

Tried this today in my Vue 2.6.14 project on th elements and the resize event doesn't fire when resizing, while the width does visibly change.
Code is simple.

Blablabla

onResizeTableHead({width, height}) {
console.log(width, height); // Doesn't fire
}}

th {
width: 100px;
resize: horizontal;
}

Of course, the package is installed correctly.
In my entry point:

import VueResizeObserver from "vue-resize-observer";

Vue.use(VueResizeObserver);

(works, no errors)