cy.injectAxe() is Causing Cypress Test Runner to Freeze

Whenever I try to use cy.injectAxe() in a test, Cypress gets stuck at the step immediately prior. The Cypress test runner itself is locked and must be force-quit.

Here is code to reproduce the problem.

context('Problem with cy.injectAxe()', function () {

  beforeEach (function () {
    // These are not real credentials.
    // Please sign up (for free) at www.vidyard.com, verify your email address, then update these accordingly before running.
    const email = 'yourEmailAddress@fake.com'
    const password = 'password123!'

    cy.visit('https://secure.vidyard.com/user/sign_in')
    cy.get('#username').type(email)
    cy.get('#password').type(password)
    cy.get('#sign-in').click()
    cy.wait(10000) // Just to make sure the page is fully loaded.
  })

  it('Accessibility Test', function () {
    // When the lines below are commented out, there is no issue.
    // When the lines are let to run, the Cypress Test Runner gets stuck on the cy.wait step.
    // Cypress will be completely frozen and must be force quit.
    cy.injectAxe()
    cy.checkA11y()
  })
})

I am using Cypress version 4.12.1 and cypress-axe version 0.8.1 on macOS 10.14.6 with Chrome 84.0.4147.105 and Firefox 79.0.

Start with the reproduction test shown in the issue using cy.injectAxe() and cy.checkA11y() on the listed Cypress and cypress-axe versions. Confirm the freeze at the preceding cy.wait step, then narrow down which command causes the runner to lock; done means the test runner remains usable and the accessibility commands complete.