Not sure if this is the place to post this, if it's been posted or if I'm even 100% correct, but
Rogues seem to be having a few issues. First main thing is that rogues lose combo points simply for deselecting their current combo point target (just to check another mob, target self, target party member, any reason). If i remember correctly, I used to be able to even switch targets while attacking and combo points would remain (assuming I didn't start building points on a new target).
Second issue is in dungeons. Recently I was grouped in Deadmines, and anytime the group pulled a mob, I was immediately pulled into combat as soon as the enemy came close. This happened consistently, and I was not being hit by aoe or anything else. As we were chain pulling, I was rarely able to enter stealth. I don't remember this ever happening back in the day; I used to be able to enter stealth well after the group was engaged and only entered combat when I actually entered combat.
I'm hoping other rogues will put a word in to support a fix (or tell me I'm misremembering)