Primed TNT cannot travel through nether portals

Is this still a concern in the current Minecraft version 1.8.1 Prerelease 3 / Launcher version 1.5.3 or later? If so, please update the affected versions in order to best aid Mojang ensuring bugs are still valid in the latest releases/pre-releases.

No response for over a year.

Couldn't reproduce it for 1.13.1.

Second opinion?

Is this still an issue in 1.14.4 or later?

Yeah it this still an issue in 1.14.4 or 19w41a.

Still an issue in 1.15.1

Affects 1.16 Release Candidate 1

Code Analysis: 

Using 1.16.1 Yarn mappings.

The reason TNT cannot enter the nether via a nether portal is simple.

The TNT extends entity however never uses the entity tick which would call the base tick and thus call the netherportaltick to enter the nether.

Instead TNT uses it own tick method with no super call to the entity tick at all and thus no calling of the nether portal stuff.

public class TntEntity
extends Entity {
//Removed code not needed
@Override
public void tick() {
    if (!this.hasNoGravity()) {
        this.setVelocity(this.getVelocity().add(0.0, -0.04, 0.0));
    }
    this.move(MovementType.SELF, this.getVelocity());
    this.setVelocity(this.getVelocity().multiply(0.98));
    if (this.onGround) {
        this.setVelocity(this.getVelocity().multiply(0.7, -0.5, 0.7));
    }
    --this.fuseTimer;
    if (this.fuseTimer <= 0) {
        this.remove();
        if (!this.world.isClient) {
            this.explode();
        }
    } else {
        this.updateWaterState();
        if (this.world.isClient) {
            this.world.addParticle(ParticleTypes.SMOKE, this.getX(), this.getY() + 0.5, this.getZ(), 0.0, 0.0, 0.0);
        }
    }
//Removed code not needed
}
}

Here is the default entity tick:

It first calls the tick which call the base tick.

public void tick() {
    if (!this.world.isClient) {
        this.setFlag(6, this.isGlowing());
    }
    this.baseTick();
}

From the base tick it calls the this.tickNetherPortal().

public void baseTick() {
//Removed code not needed
this.tickNetherPortal();
//Removed code not needed
}

From the this.tickNetherPortal(), it checks to see if the entity is in a nether portal which TNT can be at is uses the move method which checks for collisions. If it had this calling it would be able to call this.changeDimension(lv3) and enter the nether.

protected void tickNetherPortal() {
//Removed code not needed
if (this.inNetherPortal) {
//Removed code not needed
    this.changeDimension(lv3);
//Removed code not needed
}
//Removed code not needed
}

Affects 20w45a
Relates to MC-9644

Can confirm in 20w51a.

Can confirm in 21w03a.

Can confirm in 21w05b.

Can confirm in 21w06a.

Can confirm in 21w07a. Video attached.

Can confirm in 1.16.5 and 21w11a.

Relates to MC-9644.

Can confirm in 21w15a.