Behavior packs don't work if their features are in js files and if they are of type script in manifest.json

Which pack are you referencing? The "Gametest framework" toggle is no longer needed to use script, but there is a new "Beta Modules" toggle which allows you to use the `-beta` versions of script modules.

Thank you for your report!

However, this issue has been temporarily closed as Awaiting Response.

Could you please attach an example behavior pack showcasing the issue?

This ticket will automatically reopen when you reply.

Quick Links:
📓 Issue Guidelines – 💬 Mojang Support – 📓 Project Summary – 📧 Suggestions – 📖 Minecraft Wiki

I refer to those packs that were made before removing the gametest framework toggle, such as the attached pack, they no longer work since then

You manifest is quite old and out-dated.  You'll need to update your dependencies to use `module_name` instead of `uuid`.  You're also referencing removed versions of a few modules (`@minecraft/server-gametest` version 0.1.0 was removed, 1.0.0-beta is the only version now).

Can you send a link with an example of manifest scripts?