Zilean in new patch

I’m a Zilean main player and they nerfed his passive “Time in a bottle” but was not announced.

Previous season, if you’re going to give experience to your teammate, it will only take 3 seconds to transfer the experience.

But now, the first time will still be at 3 seconds or probably less but after that it will take 8 seconds to transfer which is from my bias opinion is a lot of time specially when you’re in laning phase.

I tried to look in the patch notes of this change but can’t seem to find anything related to it.