I recently installed the Conditions Validator plugin (version 2.0.2) on our JIRA instance (version 5.1.4). Since then our users have been experiencing a javascript error in IE8 whenever they transition an issue.
The spinning wheel stays on and a javascript error flag shows up on the bottom of the page. The user has to refresh the page to continue working. By refreshing the page, we can see the transition went through.
So this issue is not blocking but it is
definitely annoying for our user experience.
When we disable the conditions validator plugin, this problem does not occur anymore.