Stealing into structures or failing to steal due to lacking the range to steal or having no valid path to the target results in the self-interruption of any channeled ability in the process of being cast. The most common instance for me has been on S/P when going to use Pistol Whip: starting the channel before stealing, stealing into a structure (such as a world boss or event structure), and having my channel of Pistol Whip interupted. It seems to break through any channel I can find. This has also been happening before the 7/28 patch and may have started with the 6/23 patch. I’m only reporting it now because I was hoping it was already identified and patched in the next bug fix after the 6/23 patch.
Emerl (Thief) – Proud owner of QUIP – ET