When riding a strider, you can ride into a lava column to ascend. After moving out of the lava column, the strider starts to fall. When you then switch away from the warped fungi on a stick, the downwards velocity of the strider completely stops. Switching back to the warped fungi on a stick will also have this effect. This means you can essentially hover while riding the strider.

What I expected to happen was:

After riding out of the lava column/off a cliif, the strider would fall as normal.

What actually happened was:

The strider stopped falling when I switched to and from the warped fungus on a stick.

Steps to reproduce:

1. Spawn a strider on a block high in the air
2. Saddle the strider and use a warped fungus on a stick to ride off the block
3. Switch to an empty hand
4. The strider's downwards velocity will be set to 0