External CSS in a project attachments doesen't refresh when it’s changed

I have same probelem with two iMac (Catalina 10.15.4)

I attached a CSS file to my blocs project using the project attachment.

When I edit the css (with Visual Studio Code for example) I have to remove the attachment and re-attach it with different name completely for changes in the CSS file to be reflected in Blocs.

I’ve tried to remove and re-install Blocs…

I’ve made a new project…

And I still have same problem.

Seems Blocs cache the external css

Never happened before and It’s making me crazy.