Not all NEXT_PUBLIC_* gets exposed to browser

[rzzapp]

Hi, thanks for very solution for Next.js ecosystem. Currently we are working on transition with you library but we can't exactly make it work.

We do have some NEXT_PUBLIC_* variables which is working in browser, but some of them not getting exposed which causing issues. Such as New Relic, PostHog values. Is there anything I could miss which can cause these issues? I was thinking all NEXT_PUBLIC_* will be available on browser. 👀