80% of all times I hit the cloak button once and nothing happens. I have to hit it a second time to actually get cloaked.
I have been experiencing this a lot as well. Sometimes, it will even play the cloaking noise without actually cloaking you.
It is even more fun when there is a delay, you recloak, and then can't fire back. Inb4 HA tryhards and LA samurai invading this thread saying cloak is fine.
*delay* Must be a pretty long delay, when you still aren't cloaked 10 seconds after you hit the button. I tested it...