SOURCE

new Vue({
    el: '#aca',
    data:{
        editor: null,
    },
    mounted() {
        UE.getEditor('editor')
        ue.addListener('focus', ()=>{
            console.log('focus');
            document.querySelector('#editor').style.display = 'block'
        })
        ue.addListener('blur', ()=>{
            console.log('blur');
            document.querySelector('#editor').style.display = 'none'
        })
        timeout = 0;
        ue.addListener('focus', ()=>{
            clearTimeout(timeout)
            console.log('focus');
            document.querySelector('#editor').style.display = 'block'
        })
        ue.addListener('blur', ()=>{
            timeout = setTimeout(()=>{
                console.log('blur');document.querySelector('#editor').style.display = 'none'
            }, 200)
        })
    }
})

<div id="aca">
  <div id="editor"></div>
</div>