With Backbone version 4.1.1 we've improved our login mechanism to Jira by better leveraging Basic Authentication and Cookie-based Authentication to avoid that Jira creates too many user sessions. The improvement has a positive impact on Jira's performance. However, some customers reported problems because their systems do not allow Cookie-based Authentication and only allow Basic Authentication.
Provide an option to those customers so that we always use Basic Authentication. The option should be a Java system property like this or similar:
Using this option has an impact on Jira's performance hence, this option will not be the default option. The default option will stay the combination of Basic Authentication and Cookie-based Authentication.