If you haven't upgraded to IntelliJ IDEA 2016.1 yet, there is one more reason not to postpone it any longer. Today we've released a bugfix update where you'll find a number of important fixes.
If you are running IntelliJ IDEA 2016.1, go ahead and click Check for Updates to install the patch right from the IDE. Otherwise, you're welcome to download and install the new version from the website.