Was playing ARAM as Nami and my ult ended just a few units from where I cast as if it were blocked by a windwall; however, no such abilities were used. The only thing that seemed to maybe be the cause was Ekko using his E through the wave on me (Nami).
Replay attached.
Poluact1 votesZyra E does this from time to time (very rarely) though it may be a completely different issue.
Raven Redeemed2 votesHm interesting. They are the same type of ability (skill shot which passes through units yet still cc and damage them).
Poluact1 votesThere were suspicions that it has to do something with autoing minions, also it seemed to happen at midlane more often. But no solid evidences were found.