Hey, keep it in PARF man! ;)

Depends..sometimes in really warm weather, sprays can damage shrubbery. Maybe fertilizer burn from applying too much? If that's the case, heavy watering to dilute it.

Again..just guesswork on my part.

WTH! We’re on page 2 and Baz hasn’t chimed in. Surf must be up!

We had a 2 week dry spell but no massive heat to stress them, no fertilizer, and what's weird is there are others of the same genes around different places in the yard that just healthy and happy.
If you look at the one (bad) pic of the branch, you can see how it has a texture like it is coated. No bugs to be seen.

I had white stuff on some shrubs outside so I sprayed with malathion. Shrubs are alive. White stuff is gone.