This skill has been playing the unsheathe sound along it’s normal sound for ages now, on my male asura mesmer. I don’t know why I didn’t report it earlier, I figured it’s kind of an obvious bug and would be fixed but I guess not… I made a short video (0:54) using MSI Afterburner to demonstrate. At the end I use a Potion of Ascalonian Mages to show that it doesn’t have the sound bug.
Normally my sound quality is set to medium but I used these settings for the recording:
