Breaks collab_client.js test?

[webzwo0i]

When this plugin is installed, the collab_client test fails with

Error: waitFor condition never became true () => helper.padInner$('div').eq(0).text() === user1Text
    at Object.helper.waitFor (helper.js:206:9)
    at Object.helper.waitForPromise (helper.js:253:59)
    at http://localhost:9001/javascripts/lib/ep_etherpad-lite/tests/frontend/specs/collab_client.js?callback=testRunnerRequire.define:80:76
    at Object.performAsOtherUser (helper/multipleUsers.js:27:11)
    at Context.<anonymous> (http://localhost:9001/javascripts/lib/ep_etherpad-lite/tests/frontend/specs/collab_client.js?callback=testRunnerRequire.define:80:32)

Not sure if it's a problem with the test or with ep_cursortrace