Nether portal particles going through walls

Those are nether portal particles, not ender.

Your right i changed it to nether thanks <3

I can say it has been around a long time, I remember seeing it done in 1.7 releases, probably even in 1.6. It is possibly due to the particle code not looking for blocks right behind it, and just forces the effect in there. Take the ender chest for example, Place blocks around it, each side, the corners still have the "nether" particles around it. Fire has smoke coming from top of the block above it, etc. There is alot of bugs with these particles.

Confirmed for 16w15a and 16w15b

Confirm for 1.9.3 pre-2

Confirmed for 1.10 pre-1

Can confirm for MC 1.12.1.

Confirmed for 1.13-pre8

Confirmed for 1.13

Confirmed for 18w30b