Gutenberg still caching files

Hi,

Thank you for the great plugin.
It’s been working well, but I’ve come across and issue.

I add all of the CSS as stylesheets.
I edit the CSS inside of those files with a File Manager plugin.
With your plugin, the cache is disabled and the new version of the file is used.

But, this doesn’t work when using Gutenberg.
I’m adding classes with a single rule that I can later use in the editor, because the styling options are limited.
The problem is that, the first version of the file is cached and later changes do not apply.

What can be done to solve this?