[Snake]

When you check Bash's Elemental Impact through clicking the icon in the skill tree, it displays:

Fire - Creates Cinder tiles.
Ice - Creates Ice Sheet tiles.
Earth - Increases damage by Rank * 2.
Wind - Increases range.
Lightning - May lightning critical.

However, when Bash is used with each of those elemental impacts, only the following happen:

Fire - Deals 5 Fire physical damage.
Ice - Deals 5 Ice physical damage.
Earth - Deals 5 Earth physical damage, increases Knockback range by 3.
Wind - Deals 5 Wind physical damage.
Lightning - Deals 5 Lightning physical damage.

Is something wrong there? Should there be bonus effects done?

If suggestions are welcome, I'd call the following for the sake of symmetry:

Fire - Deals 5 Fire physical damage. Ignores knockback immunity.
Ice - Deals 5 Ice physical damage. Ignores knockback immunity.
Earth - Deals 5 Earth physical damage, increases Knockback range by 3.
Wind - Deals 5 Wind physical damage, increases Knockback range by 3.
Lightning - Deals 5 Lightning physical damage. Can critically hit.

Or just the simpler alternative of making all of them gain increased knockback range and fall in line with the Earth version. It's "enhanced by an elemental impact", so it should be more impactful. Pun intended.

[Neus]

No, it just didn't have its proper descriptions. This has been corrected in 2.90.