[GAMEPLAY] continuous, ridiculous urgot ultimate fizzles

This is happening so often that I'm starting to collect replays. Basically, there's a number of interactions that, be it scripting or whatever, break urgot's ultimate dynamics. What regularly happens is that some form of healing occurs and the pull phase of the ultimate is broken regardless of end of ultimate timer enemy health.

This is quite repeatable as a matter of fact, and there's two variants, and they seem related to some enemy proximity (i.e. warwick and his healing or other healing junglers) First variant 1- Enter a fight 2- Use ultimate 3- At low health (the threshold between 25% and below) Enemy uses a skill that heals (seen this happen with darius, gangplank, illaoi, chogath and even yi) 4- Damage enemy below 25% health 4- Urgot's ultimate 4 seconds timer elapses and enemy has less than 25% health, but the ultimate goes on cooldown without judging the weak

Second variant 1- Enter a fight 2- Use ultimate 3- At below 25% enemy health, before urgot's ultimate turns into the pull animation, enemy uses a skill that heals (seen this also happen with darius, gangplank, illaoi, chogath and even yi) 4- Ultimate goes on cooldown even if 4 seconds haven't passed, and enemy has less than 25% health, just as if it had been thrown off mark

I have one replay where the first case is very clear: you can literally see darius status "Fear beyond death": this guy is in some serious trouble and having way less than 25% health, but my actual ultimate has gone on cooldown without the judgement sequence

It might actually be that the automatic judgement is not triggered: as a matter of fact, i almost NEVER see it automatically judge at the end of the timer, regardless of enemy health.