Theme settings in theme preview

[Quadrifoglio]

Hi,
I've a git repository with a branch (master) connected to one my development theme.

I've this branch stored locally and never encountered any problem when coding with VS code, and doing 

shopify theme serve

to see the preview.

I've recently updated the CLI to 3.58.0 (I was using a 2 version and I've never had any problem).

Now (instead of theme serve I used before) if I do

shopify theme dev 

If I open the preview at 127.0.0.1:9292 though I don't see my theme settings applied... For example my buttons are in the default theme color, etc...

[Quadrifoglio]

I want to add that if I click on "Customize your theme at the theme editor" opening the theme editor instead of "http://127.0.0.1:9292" everythings looks fine...