Javascript error Undefined is not a function in Agile boards

Summary

Loading an Agile board displays a Javascript error, "a.hasAttribute is not a function":

An exception has occurred in http://127.0.0.1:8080/s/389cefa756e99d05441edefd08894435-CDN/en_US-vyuule/64020/28/27dffb62c6d53c3687501abc152a3948/_/download/contextbatch/js/greenhopper-rapid-non-gadget,gh-rapid,atl.general,jira.project.sidebar,jira.global,jira.general/batch.js?jag_disabled_marketing=true&locale=en-US&isAdmin=true at 9194:277 --- Uncaught TypeError: a.hasAttribute is not a function

This only happens when using JIRA Service Desk 2.5

Environment

• JIRA Agile 6.7.4
• JIRA Service Desk 2.5
• Chrome
• Safari

Steps to Reproduce

1. Install JIRA Agile (6.7.4) and JIRA Service Desk (2.5);
2. Access an Agile board;

Expected Results

Board is displayed without problems.

Actual Results

Javascript error is displayed at the top of the screen.

Workaround

Downgrade JIRA Service Desk to version 2.4.3. Follow the steps below to achieve this:

1. Stop JIRA;
2. Download JSD 2.4.3;
3. Go to <JIRA_HOME>/plugins/installed-plugins;
4. Locate the jira-servicedesk-2.5.0.jar file and delete it (or save it somewhere else);
5. Move the .jar file downloaded earlier (version 2.4.3) to the installed-plugins folder;
6. Start JIRA;