The latest patch altered the cloak plug-in. If you are cloaked and now use a jump hole or jump gate, you will decloak the moment you use the anomaly. Similarly, you cannot charge the jump drive while being cloaked anymore. The latter prevents the use of JD4 while cloaked to snatch people, for example, while you can simply move off-plane and decloak for using the jump drive if you want to do it in safety.
The former change is probably the worst thing for anyone using Cloak MK3, though. Luckily I sit on my 100 billions.
