Reason why WebSocket connection works on Chromium but not Firefox?

[FnordlikeCrane]

I would normally submit this as a bug but I'm not sure if this is an issue with Poem or Firefox.
I have been using the WebSocket Chat example provided in this repository as a reference for a project I'm working on, however I've noticed that there is always an issue connecting to the the WebSocket with Firefox but not Chromium.

Expected Behavior

WebSocket code from the example provided in this repository should function regardless of web browser.

Actual Behavior

WebSocket fails to establish connection on Firefox but functions properly on Chromium.
Error from the Firefox console: Firefox can’t establish a connection to the server at ws://127.0.0.1:3000/ws.

Specifications

• Poem Version: 1.0.26
• Firefox Version: 94.0
• Chromium Version: 95.0.4638.69 snap
• Platform: Ubuntu 21.04

[sunli829]

Thank you for reporting this bug, it has been fixed in 1.0.27.