In 10.5, I've noticed that I get a lot more "Pay Attention" cabin camera induced alerts than previous betas.
Apparently, this is fairly common for taller guys.
There's a popular FSD Beta YouTuber... Chuck Cook. He recently Tweeted to Elon that he's been having a lot of problems with 10.5 giving inappropriate "Pay Attention" cabin camera nags.
It appears that the common denominator for this is that it happens most frequently to tall guys.
I'm 6'1" and get it quite frequently, even if I'm looking straight out the windshield and "ghost steering," as I normally do.
In 10.5, you can tell what set off the nag, the steering wheel or the cabin camera by the type of nag you get. The steering wheel gives you the "apply slight force to steering wheel" nag we've all grown to know and love, while the cabin camera will give you a double aural ding and a "Pay Attention" dialog.
And yeah.. in 10.5, I'm getting the "Pay Attention" ding frequently, even though my eyes are glued to the road.
I'll see if I can find Chuck's Tweet (and the resulting thread) and post it here. I came across it in a Tesla related video, not on Twitter...
Edit: It turns out that Chuck has numerous threads about this on Twitter. There is some wheat to be had here, but also a ton of chaff:
Here's another one, but was way back on November 24th, before the tall driver part was figured out. Again, lot's of chaff with some wheat: