Guild Wars 2

The F2 from the Eagle pet has a possible bug/delay.

Its casttime is 0.5 sec.
It applies weakness for 4 sec if traited.
The F2 eagle cooldown is 4.75 sec.

So if I use this off cooldown, than there should be a 1.25 sec window of no weakness and F2 use. Lets take a bigger margin and make it roughly 1.5 sec.

However when my weakness buff falls of the Golemn target dummy, I still see a 2.x sec duration left on my cooldown.
Meaning the cooldown of the ability starts delayed after the weakness is applied.
Otherwise it cant have a 2.x sec remaining cooldown after the weakness falls off.

Is it bugged/delayed?

Am I overlooking something?

Pre and aftercasts. Lots of pets have this issue of also returning to a default position/stance before they can perform another attack. It’s more apparent on larger and slower pets such as bears and wyverns.