Logs spammed with Thread Corrupted! error with no ill effects in the UI

Summary

The following error appears in the logs (atlassian-jira.log) when performing random tasks:

2016-11-24 19:42:00,207 http-nio-8065-exec-21 ERROR anonymous 1181x1219x1 ubd1wo 10.60.10.50 /browse/AAS [c.a.j.w.f.steps.requestcleanup.WebworkActionCleanupStep] Thread corrupted! ActionContext still references a HttpRequest. URL: 'http://syd-ordinarypeople.office.atlassian.com:8065/GHS-59692/browse/AAS'. Attempted to clean up: true

Steps to Reproduce

1. Navigate to a certain project.
2. Then View all projects in a new tab.
3. And choose another project.
   (not limited to the above steps. Could happen with random actions or navigations)

Expected Results

No Errors in the logs

Actual result

The above Thread Corrupted error is thrown in the logs with no effects in the UI.