Whan I have turned on the "prevent attacking innocents" option I have problem using "Rapid maneuver" when mounted - usually I push the key on keyboard when I look in some direction and then at that direction are some "innocents" and so I get the system message "You cannot attack this target because of the prevent attacking innocents option".
This is quite annoying, especially when running on mount in cities with a bunch of innocents everywhere around.
This ability isn't offensive, so no idea why it highlights the warning.
Here is proof from Glenumbra docks:
Edited by Gargath on June 13, 2016 2:29PM PC EU (PL): 14 characters. ESO player since 06.08.2015. Farkas finest quote: "Some people don't think I'm smart. Those people get my fist. But you, I like."