Morellonomicon's passive bug

The passive states that dealing magic damage TO champions below 35% of max hp will apply GW for 8 seconds. In this video the magic damage was dealt to 100% HP Sona and the GW still has been applied. Obviously the checking for target's hp happens for some reason after the damage has been dealt rather than before.

[Hasasinful]

As you can see it hits sona, slow is applied and damage is on the screen but look at sona's health.It is still full HP.As you can see it works different than how you think.Its game mechanics.