WEBSITE: Cannot create account using Firefox 78

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Steps to reproduce

  1. Went to https://forum.obsidian.md in Firefox browser
  2. Clicked on “Sign Up” button in top right corner
  3. Prompt appears allowing me to enter details; I entered the details I wanted to use
  4. Click on Create New Account button

Expected result

Expected result was to create a new account

Actual result

Could not create account because the username field shows the error, “Checking username availability” indefinitely, regardless of what I enter.
2021-02-17 12_23_57-Obsidian Forum

Environment

  • Operating system: Windows 10 Pro
  • Browser: Firefox 78.7.1esr 64-bit
  • Obsidian version: N/A

Additional information

  • The issue existed in a private window also, so I don’t think it is cookies.
  • I was able to create an account (this one) using Microsoft Edge, and then sign in in Firefox.

this is more an issue to report to our forum platform

Essentially duplicated the post on the Discourse forum.
Here is the link for reference: Cannot create account using Firefox 78 - bug - Discourse Meta