Loader requiring rebuild after publish to see changes

Hi All,

Unsure where to start, but I’ve got 10+ loader (not codegen) sites sharing one codebase and hosted on Vercel. Recently, I’ve found that all my loader sites require a rebuild to reflect studio changes, whereas they previously just required a republish from plasmic studio.

Where am I going wrong? What setting dictates this, or is there a bug?

Thanks!