[Vue3] Watching control.type = 'file' omits url

[Mootook]

Describe the bug
I am unable to capture the upload of a file in the storybook controls, so that I can convert it to a blob.
The component I'm developing is dependent on this interaction.
I'm able to get array of object urls so that I could fetch when needed but am unable, within the setup() of a story template, to read this anywhere. Currently trying by watching the args object passed through setup.

To Reproduce
I have created https://github.com/Mootook/sb-file-argtype with a README to showcase how to find the warning/error.

System
System:
OS: macOS 11.2.3
CPU: (16) x64 Intel(R) Core(TM) i9-9880H CPU @ 2.30GHz
Binaries:
Node: 12.20.1 - ~/.nvm/versions/node/v12.20.1/bin/node
Yarn: 2.4.1 - /usr/local/bin/yarn
npm: 7.11.1 - ~/.nvm/versions/node/v12.20.1/bin/npm
Browsers:
Chrome: 90.0.4430.212
Safari: 14.0.3
npmPackages:
@storybook/addon-actions: ^6.3.0-alpha.25 => 6.3.0-alpha.25
@storybook/addon-docs: ^6.3.0-alpha.25 => 6.3.0-alpha.25
@storybook/addon-essentials: ^6.3.0-alpha.25 => 6.3.0-alpha.25
@storybook/addon-links: ^6.3.0-alpha.25 => 6.3.0-alpha.25
@storybook/vue3: ^6.3.0-alpha.25 => 6.3.0-alpha.25

Additional context
I found this while attempting to uploading stl, ply files for a 3d model viewer for my application, but this happens no matter the file type that I've tried.

[ndelangen]

Is this still an issue in 7.0 beta @Mootook ?

[Mootook]

Is this still an issue in 7.0 beta @Mootook ?

I am not currently in a position to test where I was experiencing this. I will try and set it up again however and report back.