I'm running Jira 7.12.0. Users are reporting that they are unable to open PDF attachments from issues when using Internet Explorer. Other attachments such as Excel, Word, etc. will open in Internet Explorer with no problem. Users are able to open PDF attachments when using Chrome. The issue wasn't reported until after upgrading from 7.11.0 to 7.12.0. Any thoughts or suggestions would be much appreciated! Thanks!!