PhpStorm 2017.3.6 build 173.4674.46 is now available! You can download it here, in JetBrains Toolbox App or if you have installed the previous PhpStorm 2017.3.5 or 2017.3.4, you should soon get a notification in the IDE about a patch update.
Notable bug fixes and features worth mentioning:
JetBrains PhpStorm Team
The Drive to Develop