I am a Subtlety rogue. When I come out of stealth it takes 3-4 seconds for the bar talents to change from stealth to normal. Doesn’t matter when you attack or just click come out of stealth still the delay. When I switch to Combat rogue there is no delay the other class has about a 1 second delay.
Do you happen to be using the Subterfuge talent in sub specialization from the rogue class tree, but not in combat specialization?