sliding door leaking air, is it installed correctly?
0.1 CFM air leakage is not exactly what I would call "very tight," but it's not terrible for a sliding door. Regardless, this looks like a problem with the installation more so than the door. The trim is covering the gap/joint between the door and the rough opening; if that's open to the exterior or not perfectly sealed off from it, then the trim is doing the job of preventing air movement. Caulk the heck out of it! If you want to get really serious, you could remove the trim, spray foam the gap, and then reinstall the trim.