i have a pair of Columbian polarized sunglasses (bought at Costco several years ago)...my display (not HUD, but LCD radio/nav screen) doesn't disappear in normal driving...the only time it disappears is if i tilt my head (for example, lay your ear on your shoulder)...i don't know if different polarized glasses are made differently or not (it's the only pair i had that are), but if i keep my head normal (vertical), the screens are all fine and maybe only fade slightly (possibly lose 10% brightness max)...if i tilt my head (ear to shoulder), it will almost disappear.
does it not work the same for you guys?