Github actions tests websocket closing

[Sytten]

I am trying to run some automated testing in Github Actions and the websocket between the test and the browser seems to always close. I am seeing:

[DEBUG] tungstenite::handshake::client: Client handshake done.
Error:  chromiumoxide::handler: WS Connection error: Ws(Protocol(ResetWithoutClosingHandshake))

This doesn't happen on desktop, so it's really weird.