Optimize on upload

Hi,
is there a way to disable the automatic optimization when a new image is uploaded?

I have enabled the option “convert existing images to WEBP…”
With I now upload a new image, only the WEBP version is added to the media.
But no jpg is uploaded…

If someone visits the website with a browser there will be no image displayed.

The only thing that comes to my mind:
Before image upload the plugin will be disabled. If I do the optimization after that, I have both: jpg. and webp.

Is there a “smarter” way to to this?

Cheers
Ralf