Jayce To the Skies! Gameplay Bug

Jayce's Q (his hammer jump) seems to get caught by all manner of things mid flight. Most dashes prevent you from being targeted by many things (e.g. Yasuo can dash through some attacks). I thought maybe it was a balance thing to not allow Jayce to jump over, say, Veigar's cage, but today I jumped over a Caitlin trap and was rooted mid-air.

Could Riot please fix Jayce's vulnerability mid-flight to prevent him from being CC'd by virtually anything when it looks like he should clear it.