Jayce is still missing animations and effects on all of his skins (including classic) ~ Intentional?

I was looking at the Full Metal Jayce skin preview and I decided to try the skin in game since I hadn't used it in quite some time, and I noticed that many of the particle effects where missing/wrong.

On all of his skins:

-Jayce is missing ''recoil'' animations on his Mercury Hammer form when he auto attacks or casts spells (this bug was introduced when Forsaken Jayce came out).

-E1: Thundering Blow: Lacks the electricity/static energy that follows Jayce's hammer whilst he swings. 1:13 on the Champion Spotlight (notice the electric after effect). 1:02 on the Skin Spotlight for Full Metal Jayce (notice the static energy after effect).

On Full Metal Jayce:

-W2: Hyper Charge; uses Classic Jayce's Hyper Charge textures (yellow/electric) instead of Full Metal's (blue/static energy). 1:32 on the Champion Spotlight. 1:15 on the Skin Spotlight for Full Metal Jayce.

Links: https://www.youtube.com/watch?v=p2YuyBZ_zMU Jayce Champion Spotlight.

https://www.youtube.com/watch?v=tUPF4c3MElE Full Metal Jayce Skin Spotlight.

https://i.gyazo.com/ee25c13f5f50c11e6735e4311f7a9f92.mp4 Classic: AA

https://i.gyazo.com/6a2a0454aac43f3fa2379ad6d415ae31.mp4 Classic: Shock Blast

https://i.gyazo.com/b3b9cd67b4e6aa7338f3d233d835b36c.mp4 Classic: Thundering Blow

https://i.gyazo.com/5a4462b6799ff966aa25434d012d8081.mp4 Full Metal: Hyper Charge

https://i.gyazo.com/bc9f8397e272e28aceef896e458fcd17.mp4 Full Metal: Thundering Blow