Vue 3 prevent ion-menu to close on outside click

I have a side menu in my vue app and I want it to stay visible on large screen and act normally on small devices.
I tried to catch the event ionWillClose and cancel the event without success.
Is there a way to prevent closing the menu when we click outside of it?

Here’s the menu declaration:
<ion-menu @ionWillClose=“OnMenuClose” content-id=“main-content” type=“reveal” class=“main-content-menu”>

Here’s my attempt at stopping the closing:
function OnMenuClose(e:Event){


return false;