Websocket connection can't authenticate

[Boelensman1]

On a fresh 0.75.2 docker based installation (everything default), I get this repeated message on the frontend:
[HocuspocusProvider] The provided authentication token isn’t allowed to connect to this server. Will try again. index.js:149

It does sometimes manage to authenticate, or at least the 'Authorization failed' message in the bottom right goes away, when this happens I get these logs in docker:

outline-1       | [onAuthenticate] Authorization required
outline-1       | {"label":"http","level":"info","message":"  <-- POST /api/auth.info"}
outline-1       | {"label":"http","level":"info","message":"  --> POST /api/auth.info 200 11ms 2.73kb"}
outline-1       | {"label":"multiplayer","level":"info","message":"New connection to \"document.c56d4e90-526b-4bd4-ae47-7e188db35e2e\""}
outline-1       | {"label":"multiplayer","level":"info","message":"New connection to \"document.c56d4e90-526b-4bd4-ae47-7e188db35e2e\""}
outline-1       | [onAuthenticate] Authorization required
outline-1       | {"label":"http","level":"info","message":"  <-- POST /api/auth.info"}
outline-1       | {"label":"http","level":"info","message":"  --> POST /api/auth.info 200 10ms 2.73kb"}
outline-1       | {"label":"multiplayer","level":"info","message":"New connection to \"document.c56d4e90-526b-4bd4-ae47-7e188db35e2e\""}
outline-1       | {"label":"multiplayer","level":"info","message":"New connection to \"document.c56d4e90-526b-4bd4-ae47-7e188db35e2e\""}
outline-1       | [onAuthenticate] Authorization required
outline-1       | {"label":"http","level":"info","message":"  <-- POST /api/auth.info"}
outline-1       | {"label":"http","level":"info","message":"  --> POST /api/auth.info 200 30ms 2.73kb"}
outline-1       | {"label":"multiplayer","level":"info","message":"New connection to \"document.c56d4e90-526b-4bd4-ae47-7e188db35e2e\""}
outline-1       | {"label":"multiplayer","level":"info","message":"New connection to \"document.c56d4e90-526b-4bd4-ae47-7e188db35e2e\""}
outline-1       | [onAuthenticate] Authorization required
outline-1       | {"label":"http","level":"info","message":"  <-- POST /api/auth.info"}
outline-1       | {"label":"http","level":"info","message":"  --> POST /api/auth.info 200 31ms 2.73kb"}
outline-1       | {"label":"multiplayer","level":"info","message":"New connection to \"document.c56d4e90-526b-4bd4-ae47-7e188db35e2e\""}
outline-1       | {"label":"multiplayer","level":"info","message":"New connection to \"document.c56d4e90-526b-4bd4-ae47-7e188db35e2e\""}
outline-1       | [onAuthenticate] Authorization required
outline-1       | {"label":"http","level":"info","message":"  <-- POST /api/auth.info"}
outline-1       | {"label":"http","level":"info","message":"  --> POST /api/auth.info 200 19ms 2.73kb"}
outline-1       | {"label":"multiplayer","level":"info","message":"New connection to \"document.c56d4e90-526b-4bd4-ae47-7e188db35e2e\""}
outline-1       | {"label":"multiplayer","level":"info","message":"New connection to \"document.c56d4e90-526b-4bd4-ae47-7e188db35e2e\""}
outline-1       | [onAuthenticate] Authorization required
outline-1       | {"label":"multiplayer","level":"info","message":"New connection to \"document.c56d4e90-526b-4bd4-ae47-7e188db35e2e\""}
outline-1       | {"label":"http","level":"info","message":"  <-- POST /api/auth.info"}
outline-1       | {"label":"http","level":"info","message":"  --> POST /api/auth.info 200 21ms 2.73kb"}
outline-1       | [onAuthenticate] Authorization required
outline-1       | {"label":"multiplayer","level":"info","message":"New connection to \"document.c56d4e90-526b-4bd4-ae47-7e188db35e2e\""}
outline-1       | [onAuthenticate] Authorization required
outline-1       | {"label":"http","level":"info","message":"  <-- POST /api/auth.info"}
outline-1       | {"label":"http","level":"info","message":"  --> POST /api/auth.info 200 19ms 2.73kb"}
outline-1       | {"label":"multiplayer","level":"info","message":"New connection to \"document.c56d4e90-526b-4bd4-ae47-7e188db35e2e\""}
outline-1       | {"label":"multiplayer","level":"info","message":"New connection to \"document.c56d4e90-526b-4bd4-ae47-7e188db35e2e\""}
outline-1       | [onAuthenticate] Authorization required
outline-1       | {"label":"http","level":"info","message":"  <-- POST /api/auth.info"}
outline-1       | {"label":"http","level":"info","message":"  --> POST /api/auth.info 200 9ms 2.73kb"}
outline-1       | {"label":"http","level":"info","message":"  <-- GET /"}
outline-1       | {"label":"http","level":"info","message":"  --> GET / 200 6ms 1.34kb"}
outline-1       | {"label":"websockets","level":"debug","message":"Authenticated socket 63IMpmaOLch7X8mxAAAD"}
outline-1       | {"label":"http","level":"info","message":"  <-- GET /"}
outline-1       | {"label":"http","level":"info","message":"  --> GET / 200 5ms 1.34kb"}
outline-1       | {"label":"multiplayer","level":"debug","message":"0 connections to \"document.d1429abf-32d0-45ab-9069-5186293174de\""}
outline-1       | {"label":"multiplayer","level":"debug","message":"No changes for document.d1429abf-32d0-45ab-9069-5186293174de"}
outline-1       | {"label":"multiplayer","level":"info","message":"Closed connection to \"document.d1429abf-32d0-45ab-9069-5186293174de\"","userId":"d0d44c29-67f8-4147-90af-5dd4a7d2adea"}

The last few messages are after reloading the page, which will cause the connection to fail again. No multiplayer messages are in the backend log afterwards (so the authentication seems to silently fail). Frontend has the message shown above. I am authenticating via google.

I have tried quite a few configuration changes but nothing seems to help. Hopefully someone knows what's causing this!

[Boelensman1]

Ok, I'm not entirely sure what happened, but I think something went wrong with cache/dns cache and there was an additional layer of reverse-proxy (via bunnycdn) happening. After a browser restart everything seems to work.