How to use fallthrough attributes with strictTemplates: true?

[cdauth]

I am using Vue 3 with single-file components, <script setup> and TypeScript. I would like TypeScript to report when I use an unknown component, an unknown directive or an unknown prop. It seems like the strictTemplates compiler option does exactly this.

However, since enabling the option, fallthrough attributes are being reported as errors. Even enabling fallthroughAttributes does not seem to change anything.

How can I use fallthrough attributes with strict templates? Is this documented anywhere?