Current master, OS X, Qt GUI, Options.
The tooltip over "Open configuration file" shows %1 instead of the config file name:
<img width="476" alt="screen shot 2017-09-01 at 17 44 43" src="https://user-images.githubusercontent.com/6848764/29977586-331d2718-8f3e-11e7-8a60-3ad51e849c01.png">