[Bug Report][2.6.2] Hiding v-menu before `close-delay` causes undefined error

[oohira]

Environment

Vuetify Version: 2.6.2
Vue Version: 2.6.14
Browsers: Chrome 97.0.4692.71
OS: Mac OS 10.15.7

Steps to reproduce

1. Open Chrome DevTools' Console tab.
2. Click DROPDOWN menu button and show menu list.
3. Click HIDE button quickly (to keep menu list shown)
4. JS error will occur after 1s.

Expected Behavior

JS error does not occur.

Actual Behavior

JS error occurs as following.

vuetify.min.js:6 Uncaught TypeError: Cannot read properties of undefined (reading 'contains')
    at vuetify.min.js:6:129798
(anonymous)	@	vuetify.min.js:6
setTimeout (async)		
runDelay	@	vuetify.min.js:6
mouseLeaveHandler	@	vuetify.min.js:6
invokeWithErrorHandling	@	vue.js:1872
invoker	@	vue.js:2197
original._wrapper	@	vue.js:7591

Reproduction Link

https://codepen.io/oohira/pen/dyVavJx

Other comments

In my real use case, users navigate to a different page (using Vue Router) when clicking the button . For simplicity, the reproducible example hide the v-menu itself.

[Cybernith]

<3