Does it? I remember playing with Codeserver last spring and found the complete lack of basic things like scrolling using the trackpad to be deal breakers. It's neat but mobile safari just was not up to it.
Scrolling with the trackpad is working fine for me (I’m on a M1 iPad Pro on iPadOS 15.4), at least on the ~7000-line package-lock.json I just tested. The app does have some quirks, mind you, like the native scrollbar obscuring the VS Code scrollbar.