[GAMEPLAY] Getting tier 2 jungle before 1:40 begins charging second smite early.

I've played a few ranked games last night and experienced something unusual in one of them. Here's short description of how things went down:

I was playing jungle Jarvain and started with Hunter's Machete and two pots.

As soom as the game started, our team made a trap in a bush and caught an enemy player off guard, resulting in me getting first blood at 0:58. I backed immediately afterwards and upgraded Hunter's Machete to Stalker's Blade and bought an additional health potion at around 1:10. Then I noticed that my smite has started charging early for the second smite.

When 1:55 hit, I smited and killed gromp wth the help of my bot lane (I was purple side, btw), killed blue buff and went mid without making prolonged stops anywhere. By the time I reached mid I already had another smite charged up, way too early.

So yeah, smite is supposed to start recharging at 1:40. But if you get Stalker's Blade very early (I assume it is the same for all tier 2 jungle items since they all have same smite recharge mechanic), your smites starts recharging earlier as well.

It is hard to reproduce this bug due to the need of getting first blood before 1:25~ (at least 7 additional seconds for recall). But if you were to reproduce this, all you need to do is, again, start with hunter's machete and get first blood extremely early. Upgrade the jungle item and watch it start recharging early.