Stuck "connecting" with a HTTP 101 loop

[RonnyAL]

Problem/Motivation

For the last few weeks, I'm regularly seeing an issue, typically after deploying changes, where Home Assistant nodes get stuck in a "connecting" status. Inject nodes remain disabled in this state.

Expected behavior

Successful connection, I guess?

Actual behavior

In the browser console, I see attempts being made every second to GET wss://[my_domain]/api/hassio_ingress/[...]/comms, always with a HTTP 101 response with a body that contains a list of JSON objects like {"subscribe":"homeassistant/labels/#"}.

After trying various other things, I've found that I'm often able to resolve the issue by restarting all flows.

Edit: Nevermind - restarting flows seems to be generally unhelpful. What I've otherwise tried is to restart Node RED, which rarely works, and restart Home Assistant, which works most if not all of the time.

Steps to reproduce

For me at least - this is seemingly quite random and happens after deploying changes.

Proposed changes

-