We have a node app running on port 3000 upstream of a nginx running in a Docker container on 80. (It's a simple passthrough from 80->3000). This has been working for a number of years until folks (locally) have upgraded from macOS 10.14 to 11.1 and we started to see an issue crop up where viewing the app on port 3000 in a browser is fine, but hitting the nginx server on 80 produces a strange efby joeybones - Other discussion