Did you read it?

"The researchers believe the problem to be behavioral in nature, and blame the fallacy to Zcash founders interacting with the protocol regularly."

"Before the paper was published online, the Zcash founders’ team was notified of the development, which was followed by the researchers observing an immediately “change in behavior” in the network."

“It is valuable to understand how much privacy is lost when using shielded addresses as a pass-through mechanism, but using it in that way is not recommended. Instead, store your Zcash in a shielded address.”


In order words, no need to panic.