[IDE] No auto completion

[MartinX3]

Describe the bug
Using IntelliJ with its Volar Typescript service.
I don't get auto completion for the QCalendar.
It also claims the html tag us unknown.
But it compiles fine and I see the calendar on the website.

To Reproduce
Steps to reproduce the behavior:

1. Use IntelliJ
2. Write the QCalendar tag
3. See the warning

Expected behavior
Auto completion

Screenshots
N/A

Additional context
The auto completion of quasar just works fine.
Maybe because of the Quasar Tools Plugin?
https://plugins.jetbrains.com/plugin/19084-quasar-tools

[MartinX3]

Also the templates in the QCalendar show errors.
As example:
<template #column-header-after="{ scope: { timestamp } }">
shows me

Volar: Element implicitly has an 'any' type because expression of type '"column-header-after"' can't be used to index type '{}'. Property 'column-header-after' does not exist on type '{}'.