[Gameplay] Brand's ult does not behave as describe in patch 5.11

I have played numerous games with Brand, the last one just a few minutes . In the game, there was Zed, and a Rumble with zhonya's. When in team fights, I would ult the Zed and he would ult, my ult would simply disappear. When I would ult the Rumble he would zhonya's and my ult would disappear. This does not line up to the patch 5.11 notes. I have seen this behavior constantly, especially with Zeds, whether surrounded by minion waves, or in team fights, when a char like Zed become un-targetable my ult vanishes, and per patch 5.11, that should not be happening.

Patch 5.11 notes

_Brand's R will spread to nearby targets, even if his target uses Zhonya's Hourglass. "When we were looking into Brand's unique niche as a chaos-sowing inferno-mage (that can be his official title if you'd like), we realized Pyroclasm was a pretty neat place to start. In reality, this change is half of what we wanted (and we'll be looking to get the second half out as soon as possible), but our end game is this: rather than thinking of Pyroclasm as a targeted nuke that chains off into everyone else, it's more of an area-effect inferno that starts at a "suggested" point (your targeted cast). After that, however, little Pyro (that's what we're calling him) just goes where he pleases, mindlessly seeking out nearby targets to set on fire. You'll see this further iterated on soon, when we make it so that if Pyroclasm ever tries to hit an untargetable body (either it gets dead mid-flight or uses Zhonyas or gets Bard ulted) during his bounce time, he'll just fly right on by to another victim, rather than fizzling out on the spot."

Pyroclasm.jpg R - Pyroclasm
    "NEW" NO STOPPING ME: If Pyroclasm's original target becomes untargetable during its travel time, it will seek out a different target rather than just fizzling out on the spot_