App proxy doesn't work after Next-Gen Dev Platform migration

Hi @Vladislav_Sorokin – There are a few different questions/issues here and you are replying to a solved thread, but I will try to help.

  • Only certain extensions appear in the Dev Console at the moment (those that are relevant to admin), and only when you click their preview links. This was the existing behavior, we are looking to improve this.
  • I’m not sure why deploy is still referencing the .env file. We don’t use them anymore. I’ll look into this. More details on this change here.
  • We stopped updating the app.toml because there was never a reason to commit the Cloudflare URLs to source control. The app URL is still updated, but just on your chosen development store. The new dev pushes all configuration and extensions to just your dev store. More details on the new app dev here
  • We did have a proxy incident that affected a limited number of dev stores. Can you try removing the proxy entirely from your app.toml, running a deploy, then adding it back and running deploy again?