It happened during one of Marek's scenes, when he explains to Shay that he's not a real wolf.
When the camera was on Shay, the subtitles were out of frame in the up right corner. I was on 1920/1080.
hardware info :
* Asus N76V
* intel i7 3630QM 2.4 GHz
* Ram 8 Gb
* Windows 8
* Nvidia Geforce 740M