Issue Summary

When Jira Custom Fields name contains a comma (,) or slash / Jira Legacy macro splits the Custom Fields name into different columns for each comma/slash. 

Steps to Reproduce

1. Create a Custom Field that has a comma or a slash in its name and add a value to the Custom Field
   
2. Insert Jira Legacy macro on a Confluence page and add the Jira project key of the issues you would like to display
3. In "Fields to Display", Include the created Custom Field that contains the comma/slash
4. Publish the page

Expected Results

The Custom Fields with a comma or a slash in their names are displayed as a single column and their values are correctly displayed.

Actual Results

The Custom Fields with a comma or a slash in their names are displayed in more than one column. Also, for the custom fields with a slash, it is added the '&#X2F' value. 

Workaround

Currently, the available workaround for this scenario would be using the new Jira Issue instead of the legacy.