Rakan bug (Q trigger)

this has happened 3 time and has resulted in either me or my allies death. me and 2 others are on the retreat after a failed team fight, an ally is at 1/3 health so to ensure his survival i throw a q back at my opponents who are chasing us down. the q lands but when i move in the triggering range of the heal it doesn't register my ally and plays out the full 2 second cycle before healing us.

if anyone has seen this happen before please let me know